---
html: transfer-nftokens.html
parent: xrpl-quickstart.html
blurb: Use a JavaScript test harness to send XRP, trade currencies, and mint and trade NFTokens.
labels:
  - Quickstart
  - Tokens
  - Non-fungible Tokens, NFTs
---

# 4. Transfer NFTokens

{% include '_snippets/nfts-disclaimer.md' %}

This example shows how to:



1. Create NFToken Sell Offers.
2. Create NFToken Buy Offers.
3. Accept NFToken Sell Offers.
4. Accept NFToken Buy Offers.
5. Get a list of offers for a particular NFToken.
6. Cancel an offer.



![Quickstart form with NFToken transfer fields](img/quickstart13.png)

You can download the [Quickstart Samples](https://github.com/XRPLF/xrpl-dev-portal/tree/master/content/_code-samples/quickstart/js/quickstart.zip) archive to try each of the samples in your own browser.


# Usage


## Get Accounts



1. Open `4.transfer-nftokens.html` in a browser.
2. Choose **XLS20-NFT** as your ledger instance.
3. Get test accounts.
    1. If you have existing NFT-Devnet account seeds
        1. Paste account seeds in the **Seeds** field.
        2. Click **Get Accounts from Seeds**.
    2. If you do not have NFT-Devnet account seeds:
        1. Click **Get New Standby Account**.
        2. Click **Get New Operational Account**.


![Form with account information](img/quickstart14.png)



## Create a Sell Offer

To create a NFToken sell offer:


1. Enter the **Amount** of the sell offer in drops (millionths of an XRP).
2. Set the **Flags** field to _1_.
3. Enter the **Token ID** of the NFToken you want to sell.
4. Optionally, enter a number of days until **Expiration**.
5. Click **Create Sell Offer**.

The important piece of information in the response is the Token Offer Index, labeled as _nft_offer_index,_ which is used to accept the sell offer.



![NFToken Sell Offer](img/quickstart15.png)



## Accept Sell Offer

Once a sell offer is available, another account can opt to accept the offer and purchase the NFToken.

To accept an available sell offer:



1. Enter the **Token Offer Index** (labeled as _nft_offer_index_ in the token offer results. This is not the same as the _nft_id_).
2. Click **Accept Sell Offer**.



![Accept Sell Offer](img/quickstart16.png)



## Create a Buy Offer

You can offer to buy a NFToken from another account.

To create an offer to buy a NFToken:



1. Enter the **Amount** of your offer.
2. Enter the **Token ID**.
3. Enter the owner’s account string in the **Owner** field.
4. Optionally enter the number of days until **Expiration**.
5. Click **Create Buy Offer**.



![NFToken Buy Offer](img/quickstart17.png)



## Accept a Buy Offer

To accept an offer to buy a NFToken:



1. Enter the **Token Offer ID** (the _nft_offer_index_ of the token buy offer).
3. Click **Accept Buy Offer**.



![Accept Buy Offer](img/quickstart18.png)



## Get Offers

To list the buy and sell offers associated with a NFToken:
1. Enter the **NFToken ID**.
2. Click **Get Offers**.



![Get offers](img/quickstart19.png)



## Cancel Offer

To cancel a buy or sell offer that you have created:



1. Enter the **Token Offer ID**.
2. Click **Cancel Offer**.



![Cancel offer](img/quickstart20.png)



# Code Walkthrough 

You can download the [Quickstart Samples](https://github.com/XRPLF/xrpl-dev-portal/tree/master/content/_code-samples/quickstart/js/quickstart.zip) archive to try each of the samples in your own browser.


## Create Sell Offer


```
// *******************************************************
// ****************** Create Sell Offer ******************
// *******************************************************
```


Connect to the ledger and get the wallet accounts.


```
async function createSellOffer() {
  const standby_wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  const operational_wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + getNet() + '...'
  document.getElementById('standbyResultField').value = results
  await client.connect()
  results += '\nConnected. Creating sell offer...'
  document.getElementById('standbyResultField').value = results
```

Compute the Expiration Date, if present. The expiration date represents the number of seconds after the Ripple Epoch that the offer should expire. Subtract the Ripple Epoch from the current system date divided by 1,000, and add the number of days (or fractions of a day) multiplied by 86400 to get the correct expiration date.

```
  //------------------------------------- Prepare Expiration Date
  var expirationDate = null
  if (standbyExpirationField.value !="") {
    var days = document.getElementById('standbyExpirationField').value
    var secondsInDay = 86400
    var rippleEpoch = 946684800
    var currentTimestamp = (new Date() / 1000) - rippleEpoch
    expirationDate = parseInt(Math.floor(currentTimestamp + (days*secondsInDay)))
  }
```

Define the transaction. A _Flags_ value of 1 indicates that this transaction is a sell offer.

```
  let transactionBlob = {
    "TransactionType": "NFTokenCreateOffer",
    "Account": standby_wallet.classicAddress,
    "NFTokenID": standbyTokenIdField.value,
    "Amount": standbyAmountField.value,
    "Flags": parseInt(standbyFlagsField.value),
  }
```

If the Expiration Date is present, append it to the transaction.

```
  if (expirationDate != null) {
    transactionBlob.Expiration = expirationDate
  }
  
```

If the Destination field is not empty, append it to the transaction. When the destination is set, only the destination account can purchase the NFToken.

```
  if(standbyDestinationField.value !== '') {
    transactionBlob.Destination = standbyDestinationField.value
  }
```


Submit the transaction and wait for the results.

        


```
  const tx = await client.submitAndWait(transactionBlob,{wallet: standby_wallet})
```


      


```
  results += '\n\n***Sell Offers***\n'
```


Request the list of sell offers for the token.


```
   let nftSellOffers
  try {
    nftSellOffers = await client.request({
      method: "nft_sell_offers",
      nft_id: standbyTokenIdField.value})
  } catch (err) {
    nftSellOffers = "No sell offers."
  }
  results += JSON.stringify(nftSellOffers,null,2)
```


Request the list of buy offers for the token.


```
  results += '\n\n***Buy Offers***\n'
  let nftBuyOffers
  try {
    nftBuyOffers = await client.request({
      method: "nft_buy_offers",
      nft_id: standbyTokenIdField.value })
  } catch (err) {
    results += 'No buy offers.'
  }
  results += JSON.stringify(nftBuyOffers,null,2)
```


Report the results of the transaction.


```
  results += '\n\nTransaction result:\n' + 
    JSON.stringify(tx.result.meta.TransactionResult, null, 2)
  results += '\n\nBalance changes:\n' + 
    JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
```


Get the current XRP balances for the operational and standby accounts.


```
  document.getElementById('operationalBalanceField').value = 
    (await client.getXrpBalance(operational_wallet.address))
  document.getElementById('standbyBalanceField').value = 
    (await client.getXrpBalance(standby_wallet.address))
  document.getElementById('standbyResultField').value = results
```


Disconnect from the ledger.


```
  client.disconnect()
}// End of createSellOffer()
```



## Create Buy Offer


```
// *******************************************************
// ***************** Create Buy Offer ********************
// *******************************************************


async function createBuyOffer() {
```


Get the account wallets and connect to the ledger.


```
  const standby_wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  const operational_wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  let results = 'Connecting to ' + getNet() + '...'
  document.getElementById('standbyResultField').value = results
  await client.connect()
  results = '\nConnected. Creating buy offer...'
  document.getElementById('standbyResultField').value = results
```
Prepare the expiration date, if present.

```
  var expirationDate = null
  if (standbyExpirationField.value !="") {
    var days = document.getElementById('standbyExpirationField').value
    var secondsInDay = 86400
    var rippleEpoch = 946684800
    var currentTimestamp = (new Date() / 1000) - rippleEpoch
    expirationDate = parseInt(Math.floor(currentTimestamp + (days*secondsInDay)))
  }
```

Define the transaction. Setting the _Flags_ value to _null_ indicates that this is a buy offer.


```
  const transactionBlob = {
    "TransactionType": "NFTokenCreateOffer",
    "Account": standby_wallet.classicAddress,
    "Owner": standbyOwnerField.value,
    "NFTokenID": standbyTokenIdField.value,
    "Amount": standbyAmountField.value,
    "Flags": null
  }
```
If the expiration date is present, append that to the transaction.

```
  if (expirationDate != null) {
    transactionBlob.Expiration = expirationDate
  }

```

Submit the transaction and wait for the results.


```
  const tx = await client.submitAndWait(transactionBlob,{wallet: standby_wallet})
```


Request the list of sell offers for the token.


```
  results += "\n\n***Sell Offers***\n"
  let nftSellOffers
  try {
    nftSellOffers = await client.request({
      method: "nft_sell_offers",
      nft_id: standbyTokenIdField.value })
  } catch (err) {
    nftSellOffers = "No sell offers."
  }
  results += JSON.stringify(nftSellOffers,null,2)
```


Request the list of buy offers for the token.


```
  results += "\n\n***Buy Offers***\n"
  let nftBuyOffers
  try {
    nftBuyOffers = await client.request({
    method: "nft_buy_offers",
    nft_id: standbyTokenIdField.value })
  } catch (err) {
    results += "No buy offers."
  }
  results += JSON.stringify(nftBuyOffers,null,2)
```


Report the results of the transaction.

      

```
  results += "\n\nTransaction result:\n" +
    JSON.stringify(tx.result.meta.TransactionResult, null, 2)
  results += "\n\nBalance changes:\n" + 
    JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
  document.getElementById('standbyResultField').value = results
```


Disconnect from the ledger.


```
  client.disconnect()
}// End of createBuyOffer()
```



## Cancel Offer


```
// *******************************************************
// ******************** Cancel Offer *********************
// *******************************************************

async function cancelOffer() {    
```


Get the standby wallet and connect to the ledger.


```
  const wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  const client = new xrpl.Client("wss://xls20-sandbox.rippletest.net:51233")
  results = 'Connecting to ' + getNet() + '...'
    document.getElementById('standbyResultField').value = results
  await client.connect()
  results +=  "\nConnected. Cancelling offer..."
  document.getElementById('standbyResultField').value = results
```


Insert the token offer index as a new array. This example destroys one offer at a time. In practice you could implement the function to accept multiple token offer index values and destroy all of the token offers in one operation.


```
  const tokenOfferIDs = [standbyTokenOfferIndexField.value]


```


Define the transaction.


```
  const transactionBlob = {
    "TransactionType": "NFTokenCancelOffer",
    "Account": wallet.classicAddress,
    "NFTokenOffers": tokenOfferIDs
  }
```


Submit the transaction and wait for the results.


```
  const tx = await client.submitAndWait(transactionBlob,{wallet})
```


Request the list of sell offers for the token.


```
  results += "\n\n***Sell Offers***\n"
  let nftSellOffers
  try {
    nftSellOffers = await client.request({
      method: "nft_sell_offers",
      nft_id: standbyTokenIdField.value
    })
  } catch (err) {
    nftSellOffers = "No sell offers."
  }
  results += JSON.stringify(nftSellOffers,null,2)
```


Request the list of buy offers for the token.


```
  results += "\n\n***Buy Offers***\n"
  let nftBuyOffers
  try {
    nftBuyOffers = await client.request({
      method: "nft_buy_offers",
      nft_id: standbyTokenIdField.value })
  } catch (err) {
    nftBuyOffers = "No buy offers."
  }
  results += JSON.stringify(nftBuyOffers,null,2)
```


Report the transaction results.


```
  results += "\nTransaction result:\n" +
    JSON.stringify(tx.result.meta.TransactionResult, null, 2)
  results += "\nBalance changes:\n" + 
    JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
  document.getElementById('standbyResultField').value = results
```


Disconnect from the ledger.


```
  client.disconnect() // End of cancelOffer()
}
```



## Get Offers


```
// *******************************************************
// ******************** Get Offers ***********************
// *******************************************************


async function getOffers() {
```

Connect to the ledger.


```
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + getNet() + '...'
  document.getElementById('standbyResultField').value = results
  await client.connect()
  results += '\nConnected. Getting offers...'
  document.getElementById('standbyResultField').value = results
```


Request the list of sell offers for the token.


```
  results += '\n\n***Sell Offers***\n'
  let nftSellOffers
  try {
    nftSellOffers = await client.request({
      method: "nft_sell_offers",
      nft_id: standbyTokenIdField.value })
    } catch (err) {
      nftSellOffers = 'No sell offers.'
  }
  results += JSON.stringify(nftSellOffers,null,2)
  document.getElementById('standbyResultField').value = results
```


Request the list of buy offers for the token.


```
  results += '\n\n***Buy Offers***\n'
  let nftBuyOffers
  try {
    nftBuyOffers = await client.request({
      method: "nft_buy_offers",
      nft_id: standbyTokenIdField.value })
  } catch (err) {
    nftBuyOffers =  'No buy offers.'
  }
  results += JSON.stringify(nftBuyOffers,null,2)
  document.getElementById('standbyResultField').value = results
```


Disconnect from the ledger.


```
  client.disconnect()
}// End of getOffers()
```



## Accept Sell Offer


```
// *******************************************************
// ****************** Accept Sell Offer ******************
// *******************************************************


async function acceptSellOffer() {
```


Get the account wallets and connect to the ledger.


```
  const standby_wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  const operational_wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + getNet() + '...'
  document.getElementById('standbyResultField').value = results
  await client.connect()
  results += '\nConnected. Accepting sell offer...\n\n'
  document.getElementById('standbyResultField').value = results
```


Define the transaction.


```
  const transactionBlob = {
    "TransactionType": "NFTokenAcceptOffer",
    "Account": standby_wallet.classicAddress,
    "NFTokenSellOffer": standbyTokenOfferIndexField.value,
  }
```


Submit the transaction and wait for the results.


```
  const tx = await client.submitAndWait(transactionBlob,{wallet: standby_wallet}) 
```


Request the list of NFTs for the standby account.


```
  const nfts = await client.request({
    method: "account_nfts",
    account: standby_wallet.classicAddress })
```


Get the balances for both accounts.


```
  document.getElementById('standbyBalanceField').value = 
    (await client.getXrpBalance(standby_wallet.address))
  document.getElementById('operationalBalanceField').value = 
    (await client.getXrpBalance(operational_wallet.address))
```


Report the transaction results.


```
  results += 'Transaction result:\n'
  results +=  JSON.stringify(tx.result.meta.TransactionResult, null, 2)
  results += '\nBalance changes:'
  results +=  JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
  results += JSON.stringify(nfts,null,2)
  document.getElementById('standbyResultField').value = results
```


Disconnect from the ledger.


```
  client.disconnect()
}// End of acceptSellOffer()
```



## Accept Buy Offer


```
// *******************************************************
// ******************* Accept Buy Offer ******************
// *******************************************************


async function acceptBuyOffer() {
```


Get the account wallets and connect to the ledger.


```
  const standby_wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  const operational_wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + getNet() + '...'
  document.getElementById('standbyResultField').value = results
  await client.connect()
  results += '\nConnected. Accepting buy offer...'
  document.getElementById('standbyResultField').value = results
```


Prepare the transaction.


```
    "TransactionType": "NFTokenAcceptOffer",
    "Account": standby_wallet.classicAddress,
    "NFTokenBuyOffer": standbyTokenOfferIndexField.value
  }
```


Submit the transaction and wait for the results.


```
  const tx = await client.submitAndWait(transactionBlob,{wallet: standby_wallet}) 
```


Request the current list of NFTs for the standby account.


```
  const nfts = await client.request({
    method: "account_nfts",
    account: standby_wallet.classicAddress  
  })
  results += JSON.stringify(nfts,null,2)
  document.getElementById('standbyResultField').value = results
```


Report the transaction result.


```
  results += "\n\nTransaction result:\n" + 
    JSON.stringify(tx.result.meta.TransactionResult, null, 2)
  results += "\nBalance changes:\n" +
    JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
```


Request the XRP balance for both accounts.


```
  document.getElementById('operationalBalanceField').value = 
    (await client.getXrpBalance(operational_wallet.address))
  document.getElementById('standbyBalanceField').value = 
    (await client.getXrpBalance(standby_wallet.address))
  document.getElementById('standbyResultField').value = results
```


Disconnect from the ledger.


```
  client.disconnect()
}// End of acceptBuyOffer()
```



## Reciprocal Transactions

These functions duplicate the functions of the standby account for the operational account. See the corresponding standby account function for walkthrough information.

```
// *******************************************************
// *********** Operational Create Sell Offer *************
// *******************************************************

async function oPcreateSellOffer() {
  const standby_wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  const operational_wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + getNet() + '...'
  document.getElementById('operationalResultField').value = results
    await client.connect()
  results += '\nConnected. Creating sell offer...'
  document.getElementById('operationalResultField').value = results

  //------------------------------------- Prepare Expiration Date
  var expirationDate = null
  if (operationalExpirationField.value !="") {
    var days = document.getElementById('operationalExpirationField').value
    var secondsInDay = 86400
    var rippleEpoch = 946684800
    var currentTimestamp = (new Date() / 1000) - rippleEpoch
    expirationDate = parseInt(Math.floor(currentTimestamp + (days*secondsInDay)))
  }
  // Prepare transaction -------------------------------------------------------
  let transactionBlob = {
      "TransactionType": "NFTokenCreateOffer",
      "Account": operational_wallet.classicAddress,
      "NFTokenID": operationalTokenIdField.value,
      "Amount": operationalAmountField.value,
      "Flags": parseInt(operationalFlagsField.value),
  }
  if (expirationDate != null) {
    transactionBlob.Expiration = expirationDate
  }
  if(standbyDestinationField.value !== '') {
    transactionBlob.Destination = operationalDestinationField.value
  }

  // Submit transaction --------------------------------------------------------

  const tx = await client.submitAndWait(transactionBlob,{wallet: operational_wallet})

  results += '\n\n***Sell Offers***\n'

  let nftSellOffers
  try {
    nftSellOffers = await client.request({
      method: "nft_sell_offers",
      nft_id: operationalTokenIdField.value  
    })
  } catch (err) {
    nftSellOffers = "No sell offers."
  }
  results += JSON.stringify(nftSellOffers,null,2)
  results += '\n\n***Buy Offers***\n'
  let nftBuyOffers
  try {
    nftBuyOffers = await client.request({
      method: "nft_buy_offers",
      nft_id: operationalTokenIdField.value })
  } catch (err) {
    results += 'No buy offers.'
  }
  results += JSON.stringify(nftBuyOffers,null,2)

  // Check transaction results -------------------------------------------------
  results += '\n\nTransaction result:\n' + 
    JSON.stringify(tx.result.meta.TransactionResult, null, 2)
  results += '\n\nBalance changes:\n' + 
    JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
  document.getElementById('operationalBalanceField').value = 
    (await client.getXrpBalance(operational_wallet.address))
  document.getElementById('standbyBalanceField').value = 
    (await client.getXrpBalance(standby_wallet.address))
  document.getElementById('operationalResultField').value = results

  client.disconnect()
}  // End of oPcreateSellOffer()

// *******************************************************
// ************** Operational Create Buy Offer ***********
// *******************************************************

async function oPcreateBuyOffer() {

  const standby_wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  const operational_wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  let results = 'Connecting to ' + getNet() + '...'
  document.getElementById('operationalResultField').value = results
  await client.connect()
  results = '\nConnected. Creating buy offer...'
  document.getElementById('operationalResultField').value = results

  //------------------------------------- Prepare Expiration Date
  var expirationDate = null
  if (standbyExpirationField.value !="") {
    var days = document.getElementById('operationalExpirationField').value
    var secondsInDay = 86400
    var rippleEpoch = 946684800
    var currentTimestamp = (new Date() / 1000) - rippleEpoch
    expirationDate = parseInt(Math.floor(currentTimestamp + (days*secondsInDay)))
  }

  // Prepare transaction -------------------------------------------------------
  const transactionBlob = {
    "TransactionType": "NFTokenCreateOffer",
    "Account": operational_wallet.classicAddress,
    "Owner": operationalOwnerField.value,
    "NFTokenID": operationalTokenIdField.value,
    "Amount": operationalAmountField.value,
    "Flags": null,
  }
  if (expirationDate != null) {
    transactionBlob.Expiration = expirationDate
  }
  // Submit transaction --------------------------------------------------------
  const tx = await client.submitAndWait(transactionBlob,{wallet: operational_wallet})

  results += "\n\n***Sell Offers***\n"
  let nftSellOffers
  try {
    nftSellOffers = await client.request({
      method: "nft_sell_offers",
      nft_id: operationalTokenIdField.value  
    })
  } catch (err) {
    nftSellOffers = "No sell offers."
  }
  results += JSON.stringify(nftSellOffers,null,2)
  results += "\n\n***Buy Offers***\n"
  let nftBuyOffers
  try {
    nftBuyOffers = await client.request({
      method: "nft_buy_offers",
      nft_id: operationalTokenIdField.value
    })
  } catch (err) {
    results += "No buy offers."
  }
  results += JSON.stringify(nftBuyOffers,null,2)

  // Check transaction results -------------------------------------------------
  results += "\n\nTransaction result:\n" +
    JSON.stringify(tx.result.meta.TransactionResult, null, 2)
  results += "\n\nBalance changes:\n" + 
    JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
  document.getElementById('operationalResultField').value = results

  client.disconnect()
}// End of oPcreateBuyOffer()

// *******************************************************
// ************* Operational Cancel Offer ****************
// *******************************************************

async function oPcancelOffer() {

  const wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  const client = new xrpl.Client("wss://xls20-sandbox.rippletest.net:51233")
  results = 'Connecting to ' + getNet() + '...'
  document.getElementById('operationalResultField').value = results
  await client.connect()
  results +=  "\nConnected. Cancelling offer..."
  document.getElementById('operationalResultField').value = results

  const tokenOfferIDs = [operationalTokenOfferIndexField.value]

  // Prepare transaction -------------------------------------------------------
  const transactionBlob = {
    "TransactionType": "NFTokenCancelOffer",
    "Account": wallet.classicAddress,
    "NFTokenOffers": tokenOfferIDs
  }
  // Submit transaction --------------------------------------------------------
  const tx = await client.submitAndWait(transactionBlob,{wallet})

  results += "\n\n***Sell Offers***\n"
  let nftSellOffers
  try {
    nftSellOffers = await client.request({
      method: "nft_sell_offers",
      nft_id: operationalTokenIdField.value
    })
  } catch (err) {
    nftSellOffers = "No sell offers."
  }
  results += JSON.stringify(nftSellOffers,null,2)
  results += "\n\n***Buy Offers***\n"
  let nftBuyOffers
  try {
    nftBuyOffers = await client.request({
      method: "nft_buy_offers",
      nft_id: operationalTokenIdField.value })
  } catch (err) {
    nftBuyOffers = "No buy offers."
  }
  results += JSON.stringify(nftBuyOffers,null,2)

  // Check transaction results -------------------------------------------------

  results += "\nTransaction result:\n" +
    JSON.stringify(tx.result.meta.TransactionResult, null, 2)
  results += "\nBalance changes:\n" + 
    JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
  document.getElementById('operationalResultField').value = results

  client.disconnect()
}// End of oPcancelOffer()

// *******************************************************
// **************** Operational Get Offers ***************
// *******************************************************

async function oPgetOffers() {
  const standby_wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + getNet() + '...'
  document.getElementById('operationalResultField').value = results
  await client.connect()
  results += '\nConnected. Getting offers...'

  results += '\n\n***Sell Offers***\n'

  let nftSellOffers
  try {
    nftSellOffers = await client.request({
      method: "nft_sell_offers",
      nft_id: operationalTokenIdField.value})
  } catch (err) {
    nftSellOffers = 'No sell offers.'
  }
  results += JSON.stringify(nftSellOffers,null,2)

  document.getElementById('standbyResultField').value = results

  results += '\n\n***Buy Offers***\n'
  let nftBuyOffers
  try {
    nftBuyOffers = await client.request({
      method: "nft_buy_offers",
      nft_id: operationalTokenIdField.value })
  } catch (err) {
    nftBuyOffers =  'No buy offers.'
  }
  results += JSON.stringify(nftBuyOffers,null,2)  
  document.getElementById('operationalResultField').value = results

  client.disconnect()
}// End of oPgetOffers()

// *******************************************************
// *************** Operational Accept Sell Offer *********
// *******************************************************

async function oPacceptSellOffer() {
  const standby_wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  const operational_wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + getNet() + '...'
  document.getElementById('operationalResultField').value = results
  await client.connect()
  results += '\nConnected. Accepting sell offer...\n\n'
  document.getElementById('operationalResultField').value = results

  // Prepare transaction -------------------------------------------------------
  const transactionBlob = {
    "TransactionType": "NFTokenAcceptOffer",
    "Account": operational_wallet.classicAddress,
    "NFTokenSellOffer": operationalTokenOfferIndexField.value,
  }
  // Submit transaction --------------------------------------------------------
  const tx = await client.submitAndWait(transactionBlob,{wallet: operational_wallet}) 
  const nfts = await client.request({
    method: "account_nfts",
    account: operational_wallet.classicAddress })

  // Check transaction results -------------------------------------------------

  document.getElementById('standbyBalanceField').value = 
    (await client.getXrpBalance(standby_wallet.address))
  document.getElementById('operationalBalanceField').value = 
    (await client.getXrpBalance(operational_wallet.address))

  results += 'Transaction result:\n'
  results +=  JSON.stringify(tx.result.meta.TransactionResult, null, 2)
  results += '\nBalance changes:'
  results +=  JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
  results += JSON.stringify(nfts,null,2)   
  document.getElementById('operationalResultField').value = results    
  client.disconnect()
}// End of acceptSellOffer()

// *******************************************************
// ********* Operational Accept Buy Offer ****************
// *******************************************************

async function oPacceptBuyOffer() {
  const standby_wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  const operational_wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + getNet() + '...'
  document.getElementById('operationalResultField').value = results
  await client.connect()
  results += '\nConnected. Accepting buy offer...'
  document.getElementById('operationalResultField').value = results

  // Prepare transaction -------------------------------------------------------
  const transactionBlob = {
    "TransactionType": "NFTokenAcceptOffer",
    "Account": operational_wallet.classicAddress,
    "NFTokenBuyOffer": operationalTokenOfferIndexField.value
  }
  // Submit transaction --------------------------------------------------------
  const tx = await client.submitAndWait(transactionBlob,{wallet: operational_wallet}) 
  const nfts = await client.request({
    method: "account_nfts",
    account: operational_wallet.classicAddress })
  results += JSON.stringify(nfts,null,2)
  document.getElementById('operationalResultField').value = results

  // Check transaction results -------------------------------------------------
  results += "\n\nTransaction result:\n" + 
    JSON.stringify(tx.result.meta.TransactionResult, null, 2)
  results += "\nBalance changes:\n" +
    JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
  document.getElementById('operationalBalanceField').value = 
    (await client.getXrpBalance(operational_wallet.address))
  document.getElementById('operationalBalanceField').value = 
    (await client.getXrpBalance(standby_wallet.address))
  document.getElementById('operationalResultField').value = results
  client.disconnect()
}// End of acceptBuyOffer()
```



## 4.transfer-nfts.html

Update the form with fields and buttons to support the new functions.


```
<!-- ************************************************************** -->
<!-- ********************** The Form ****************************** -->
<!-- ************************************************************** -->

<html>
  <head>
    <title>Token Test Harness</title>
    <script src='https://unpkg.com/xrpl@2.2.3'></script>
    <script src='ripplex1-send-xrp.js'></script>
    <script src='ripplex2-send-currency.js'></script>
    <script src='ripplex3-mint-nfts.js'></script>
    <script src='ripplex4-transfer-nfts.js'></script>
    <script>
      if (typeof module !== "undefined") {
        const xrpl = require('xrpl')
      }
     
    </script>
  </head>
  
<!-- ************************************************************** -->
<!-- ********************** The Form ****************************** -->
<!-- ************************************************************** -->

  <body>
    <h1>Token Test Harness</h1>
    <form id="theForm">
      Choose your ledger instance:  
      <input type="radio" id="xls" name="server"
        value="wss://xls20-sandbox.rippletest.net:51233" checked>
      <label for="xls20">XLS20-NFT</label>
      &nbsp;&nbsp;
      <input type="radio" id="tn" name="server"
        value="wss://s.altnet.rippletest.net:51233">
      <label for="testnet">Testnet</label>
      &nbsp;&nbsp;
      <input type="radio" id="dn" name="server"
        value="wss://s.devnet.rippletest.net:51233">
      <label for="devnet">Devnet</label>
      <br/><br/>
      <button type="button" onClick="getAccountsFromSeeds()">Get Accounts From Seeds</button>
      <br/>
      <textarea id="seeds" cols="40" rows= "2"></textarea>
      <br/><br/>
      <table>
        <tr valign="top">
          <td>
            <table>
              <tr valign="top">
                <td>
                <td>
                  <button type="button" onClick="getAccount('standby')">Get New Standby Account</button>
                  <table>
                    <tr valign="top">
                      <td align="right">
                        Standby Account
                      </td>
                      <td>
                        <input type="text" id="standbyAccountField" size="40"></input>
                        <br>
                      </td>
                    </tr>
                    <tr>
                      <td align="right">
                        Public Key
                      </td>
                      <td>
                        <input type="text" id="standbyPubKeyField" size="40"></input>
                        <br>
                      </td>
                    </tr>
                    <tr>
                      <td align="right">
                        Private Key
                      </td>
                      <td>
                        <input type="text" id="standbyPrivKeyField" size="40"></input>
                        <br>
                      </td>
                    </tr>
                    <tr>
                      <td align="right">
                        Seed
                      </td>
                      <td>
                        <input type="text" id="standbySeedField" size="40"></input>
                        <br>
                      </td>
                    </tr>
                    <tr>
                      <td align="right">
                        XRP Balance
                      </td>
                      <td>
                        <input type="text" id="standbyBalanceField" size="40"></input>
                        <br>
                      </td>
                    </tr>
                    <tr>
                      <td align="right">
                        Amount
                      </td>
                      <td>
                        <input type="text" id="standbyAmountField" size="40"></input>
                        <br>
                      </td>
                    </tr>
                    <tr valign="top">
                      <td><button type="button" onClick="configureAccount('standby',document.querySelector('#standbyDefault').checked)">Configure Account</button></td>
                      <td>
                        <input type="checkbox" id="standbyDefault" checked="true"/>
                        <label for="standbyDefault">Allow Rippling</label>
                      </td>
                    </tr>
                    <tr>
                      <td align="right">
                        Currency
                      </td>
                      <td>
                        <input type="text" id="standbyCurrencyField" size="40" value="USD"></input>
                      </td>
                    </tr>
                    <tr>
                      <td align="right">NFToken URL</td>
                      <td><input type="text" id="standbyTokenUrlField"
                        value = "ipfs://bafybeigdyrzt5sfp7udm7hu76uh7y26nf4dfuylqabf3oclgtqy55fbzdi" size="80"/>
                      </td>
                    </tr>
                    <tr>
                      <td align="right">Flags</td>
                      <td><input type="text" id="standbyFlagsField" value="1" size="10"/></td>
                    </tr>
                    <tr>
                      <td align="right">NFToken ID</td>
                      <td><input type="text" id="standbyTokenIdField" value="" size="80"/></td>
                    </tr>
                    <tr>
                      <td align="right">NFToken Offer Index</td>
                      <td><input type="text" id="standbyTokenOfferIndexField" value="" size="80"/></td>
                    </tr>
                    <tr>
                      <td align="right">Owner</td>
                      <td><input type="text" id="standbyOwnerField" value="" size="80"/></td>
                    </tr>
                    <tr>
                      <td align="right">Destination</td>
                      <td><input type="text" id="standbyDestinationField" value="" size="80"/></td>
                    </tr>
                    <tr>
                      <td align="right">Expiration</td>
                      <td><input type="text" id="standbyExpirationField" value="" size="80"/></td>
                    </tr>
                    <tr>
                      <td align="right">Transfer Fee</td>
                      <td><input type="text" id="standbyTransferFeeField" value="" size="80"/></td>
                    </tr>
                  </table>
                  <p align="left">
                    <textarea id="standbyResultField" cols="80" rows="20" ></textarea>
                  </p>
                </td>
                </td>
                <td>
                  <table>
                    <tr valign="top">
                      <td align="center" valign="top">
                        <button type="button" onClick="sendXRP()">Send XRP&#62;</button>
                        <br/><br/>
                        <button type="button" onClick="createTrustline()">Create TrustLine</button>
                        <br/>
                        <button type="button" onClick="sendCurrency()">Send Currency</button>
                        <br/>
                        <button type="button" onClick="getBalances()">Get Balances</button>
                        <br/><br/>
                        <button type="button" onClick="mintToken()">Mint NFToken</button>
                        <br/>
                        <button type="button" onClick="getTokens()">Get NFTokens</button>
                        <br/>
                        <button type="button" onClick="burnToken()">Burn NFToken</button>
                        <br/><br/>
                        <button type="button" onClick="createSellOffer()">Create Sell Offer</button>
                        <br/>
                        <button type="button" onClick="acceptSellOffer()">Accept Sell Offer</button>
                        <br/>
                        <button type="button" onClick="createBuyOffer()">Create Buy Offer</button>
                        <br/>
                        <button type="button" onClick="acceptBuyOffer()">Accept Buy Offer</button>
                        <br/>
                        <button type="button" onClick="getOffers()">Get Offers</button>
                        <br/>
                        <button type="button" onClick="cancelOffer()">Cancel Offer</button>
                      </td>
                    </tr>
                    </td>
                    </tr>
                  </table>
                </td>
              </tr>
            </table>
          </td>
          <td>
            <table>
              <tr>
                <td>
                <td>
                  <table>
                    <tr>
                      <td align="center" valign="top">
                        <button type="button" onClick="oPsendXRP()">&#60; Send XRP</button>
                        <br/><br/>
                        <button type="button" onClick="oPcreateTrustline()">Create TrustLine</button>
                        <br/>
                        <button type="button" onClick="oPsendCurrency()">Send Currency</button>
                        <br/>
                        <button type="button" onClick="getBalances()">Get Balances</button>
                        <br/><br/>
                        <button type="button" onClick="oPmintToken()">Mint NFToken</button>
                        <br/>
                        <button type="button" onClick="oPgetTokens()">Get NFTokens</button>
                        <br/>
                        <button type="button" onClick="oPburnToken()">Burn NFToken</button>
                        <br/><br/>
                        <button type="button" onClick="oPcreateSellOffer()">Create Sell Offer</button>
                        <br/>
                        <button type="button" onClick="oPacceptSellOffer()">Accept Sell Offer</button>
                        <br/>
                        <button type="button" onClick="oPcreateBuyOffer()">Create Buy Offer</button>
                        <br/>
                        <button type="button" onClick="oPacceptBuyOffer()">Accept Buy Offer</button>
                        <br/>
                        <button type="button" onClick="oPgetOffers()">Get Offers</button>
                        <br/>
                        <button type="button" onClick="oPcancelOffer()">Cancel Offer</button>
                      </td>
                      <td valign="top" align="right">
                        <button type="button" onClick="getAccount('operational')">Get New Operational Account</button>
                        <table>
                          <tr valign="top">
                            <td align="right">
                              Operational Account
                            </td>
                            <td>
                              <input type="text" id="operationalAccountField" size="40"></input>
                              <br>
                            </td>
                          </tr>
                          <tr>
                            <td align="right">
                              Public Key
                            </td>
                            <td>
                              <input type="text" id="operationalPubKeyField" size="40"></input>
                              <br>
                            </td>
                          </tr>
                          <tr>
                            <td align="right">
                              Private Key
                            </td>
                            <td>
                              <input type="text" id="operationalPrivKeyField" size="40"></input>
                              <br>
                            </td>
                          </tr>
                          <tr>
                            <td align="right">
                              Seed
                            </td>
                            <td>
                              <input type="text" id="operationalSeedField" size="40"></input>
                              <br>
                            </td>
                          </tr>
                          <tr>
                            <td align="right">
                              XRP Balance
                            </td>
                            <td>
                              <input type="text" id="operationalBalanceField" size="40"></input>
                              <br>
                            </td>
                          </tr>
                          <tr>
                            <td align="right">
                              Amount
                            </td>
                            <td>
                              <input type="text" id="operationalAmountField" size="40"></input>
                              <br>
                            </td>
                          </tr>
                          <tr>
                            <td>
                            </td>
                            <td align="right">                        <input type="checkbox" id="operationalDefault" checked="true"/>
                              <label for="operationalDefault">Allow Rippling</label>
                              <button type="button" onClick="configureAccount('operational',document.querySelector('#operationalDefault').checked)">Configure Account</button>
                            </td>
                          </tr>
                          <tr>
                            <td align="right">
                              Currency
                            </td>
                            <td>
                              <input type="text" id="operationalCurrencyField" size="40" value="USD"></input>
                            </td>
                          </tr>
                          <tr>
                            <td align="right">NFToken URL</td>
                            <td><input type="text" id="operationalTokenUrlField"
                              value = "ipfs://bafybeigdyrzt5sfp7udm7hu76uh7y26nf4dfuylqabf3oclgtqy55fbzdi" size="80"/>
                            </td>
                          </tr>
                          <tr>
                            <td align="right">Flags</td>
                            <td><input type="text" id="operationalFlagsField" value="1" size="10"/></td>
                          </tr>
                          <tr>
                            <td align="right">NFToken ID</td>
                            <td><input type="text" id="operationalTokenIdField" value="" size="80"/></td>
                          </tr>
                          <tr>
                            <td align="right">NFToken Offer Index</td>
                            <td><input type="text" id="operationalTokenOfferIndexField" value="" size="80"/></td>
                          </tr>
                          <tr>
                            <td align="right">Owner</td>
                            <td><input type="text" id="operationalOwnerField" value="" size="80"/></td>
                          </tr>
                          <tr>
                            <td align="right">Destination</td>
                            <td><input type="text" id="operationalDestinationField" value="" size="80"/></td>
                          </tr>
                          <tr>
                            <td align="right">Expiration</td>
                            <td><input type="text" id="operationalExpirationField" value="" size="80"/></td>
                          </tr>
                          <tr>
                            <td align="right">Transfer Fee</td>
                            <td><input type="text" id="operationalTransferFeeField" value="" size="80"/></td>
                          </tr>
                        </table>
                        <p align="right">
                          <textarea id="operationalResultField" cols="80" rows="20" ></textarea>
                        </p>
                      </td>
                      </td>
                    </tr>
                    </td>
                    </tr>
                  </table>
                </td>
              </tr>
            </table>
          </td>
        </tr>
      </table>
    </form>
  </body>
</html>

```

---


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| :---                                                     |  ---: |
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