xrpl-dev-portal/content/tutorials/quickstart/transfer-nfts-using-javascript.md

---
html: transfer-nfts-using-javascript.html
parent: nfts-using-javascript.html
blurb: Use a JavaScript test harness to send XRP, trade currencies, and mint and trade NFTs.
labels:
  - Quickstart
  - Tokens
  - Non-fungible Tokens, NFTs
---
# Transfer NFTs Using JavaScript

This example shows how to:

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

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

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

# Usage

## Get Accounts

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

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

## Create a Sell Offer

To create a NFT 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 **NFT ID** of the NFT 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 NFT Offer Index, labeled as `nft_offer_index`, which you use to accept the sell offer.

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

## Accept Sell Offer

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

To accept an available sell offer:

1. Enter the **NFT Offer Index** (labeled as `nft_offer_index` in the token offer results. This is different from the `NFTokenID`.)
2. Click **Accept Sell Offer**.

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

## Create a Buy Offer

You can offer to buy a NFT from another account.

To create an offer to buy a NFT:

1. Enter the **Amount** of your offer.
2. Enter the **NFT 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**.

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

## Accept a Buy Offer

To accept an offer to buy a NFT:

1. Enter the **NFT Offer Index** (the `nft_offer_index` of the NFT buy offer).
3. Click **Accept Buy Offer**.

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

## Get Offers

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

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

## Cancel Offer

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

1. Enter the **NFT Offer Index**.
2. Click **Cancel Offer**.

[![Cancel offer](img/quickstart20.png)](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){.github-code-download} archive to try each of the samples in your own browser.

## Create Sell Offer

```javascript
// *******************************************************
// ****************** Create Sell Offer ******************
// *******************************************************
      
async function createSellOffer() {
```

Connect to the ledger and get the accounts.

```javascript
  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 ' + net + '...'
  standbyResultField.value = results
  await client.connect()
  results += '\nConnected. Creating sell offer...'
  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. Start with the current date, add the number of days till expiration, then set the `expirationDate` variable to the converted date in Ripple time. 

```javascript
  var expirationDate = null
  if (standbyExpirationField.value !="") {
    var days = standbyExpirationField.value
    let d = new Date()
    d.setDate(d.getDate() + parseInt(days))
    var expirationDate = xrpl.isoTimeToRippleTime(d)
  }
```

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

```javascript
  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.

```javascript
  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 buy the NFToken.

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

Submit the transaction and wait for the results.


```javascript
  const tx = await client.submitAndWait(transactionBlob,{wallet: standby_wallet})
  results += '\n\n***Sell Offers***\n'
```

Request the list of sell offers for the token.

```javascript      
  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.

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

Report the results of the transaction.

```javascript
  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.

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

Disconnect from the ledger.

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

## Create Buy Offer

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

async function createBuyOffer() {
```

Get the account and connect to the ledger.

```javascript
  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 ' + net + '...'
  standbyResultField.value = results
  await client.connect()
  results = '\nConnected. Creating buy offer...'
  standbyResultField.value = results
```
Prepare the expiration date, if present.

```javascript
  var expirationDate = null
  if (standbyExpirationField.value !="") {
    var days = standbyExpirationField.value
    let d = new Date()
    d.setDate(d.getDate() + parseInt(days))
    var expirationDate = xrpl.isoTimeToRippleTime(d)
  }
```

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


```javascript
  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.

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

Submit the transaction and wait for the results.

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

Request the list of sell offers for the token.

```javascript
  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.

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

Report the results of the transaction.

```javascript
  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)
  standbyResultField.value = results```

Disconnect from the ledger.

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

## Cancel Offer



// START HERE




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

async function cancelOffer() {    
```

Get the standby address and connect to the ledger.

```javascript      
  const wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + net + '...' + standbyResultField.value = results
  await client.connect()
  results +=  "\nConnected. Cancelling offer..."
  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.

```javascript      
  const tokenOfferIDs = [standbyTokenOfferIndexField.value]
```

Define the transaction.

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

Submit the transaction and wait for the results.

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

Request the list of sell offers for the token.

```javascript      
  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.

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

Report the transaction results.

```javascript      
  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)
  standbyResultField.value = results
```

Disconnect from the ledger.

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

## Get Offers

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


async function getOffers() {
```

Connect to the ledger.

```javascript      
  const standby_wallet = xrpl.Wallet.fromSeed(standbySeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + net + '...'
  standbyResultField.value = results
  await client.connect()
  results += '\nConnected. Getting offers...'
  standbyResultField.value = results
```

Request the list of sell offers for the token.

```javascript      
  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)
  standbyResultField.value = results
```

Request the list of buy offers for the token.

```javascript      
  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)
  standbyResultField.value = results
```

Disconnect from the ledger.

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

## Accept Sell Offer

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


async function acceptSellOffer() {
```

Get the accounts and connect to the ledger.

```javascript      
  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 ' + net + '...'
  standbyResultField.value = results
  await client.connect()
  results += '\nConnected. Accepting sell offer...\n\n'
  standbyResultField.value = results
```

Define the transaction.

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

Submit the transaction and wait for the results.

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

Request the list of NFTs for the standby account.

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

Get the balances for both accounts.

```javascript      
  standbyBalanceField.value = (await client.getXrpBalance(standby_wallet.address))
  operationalBalanceField.value = (await client.getXrpBalance(operational_wallet.address))
```

Report the transaction results.

```javascript      
  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)
  standbyResultField.value = results
```

Disconnect from the ledger.

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

## Accept Buy Offer

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


async function acceptBuyOffer() {
```

Get the accounts and connect to the ledger.

```javascript      
  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 ' + net + '...'
  standbyResultField.value = results
  await client.connect()
  results += '\nConnected. Accepting buy offer...'
  standbyResultField.value = results
```

Prepare the transaction.

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

Submit the transaction and wait for the results.

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


Request the current list of NFTs for the standby account.


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

Report the transaction result.

```javascript      
  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.


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

Disconnect from the ledger.

```javascript      
  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.

```javascript      
// *******************************************************
// *********** 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 ' + net + '...'
  operationalResultField.value = results
    await client.connect()
  results += '\nConnected. Creating sell offer...'
  operationalResultField.value = results

  //------------------------------------- Prepare Expiration Date
  var expirationDate = null
  if (operationalExpirationField.value !="") {
    var days = operationalExpirationField.value
    let d = new Date()
    d.setDate(d.getDate() + parseInt(days))
    var expirationDate = xrpl.isoTimeToRippleTime(d)
  }
  // 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
    })
    results += JSON.stringify(nftBuyOffers,null,2)
  } catch (err) {
    results += 'No buy offers.'
  }

  // 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)
  operationalBalanceField.value = 
    (await client.getXrpBalance(operational_wallet.address))
  standbyBalanceField.value = 
    (await client.getXrpBalance(standby_wallet.address))
  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 ' + net + '...'
  operationalResultField.value = results
  await client.connect()
  results = '\nConnected. Creating buy offer...'
  operationalResultField.value = results

  //------------------------------------- Prepare Expiration Date
  var expirationDate = null
  if (operationalExpirationField.value !="") {
    var days = operationalExpirationField.value
    let d = new Date()
    d.setDate(d.getDate() + parseInt(days))
    var expirationDate = xrpl.isoTimeToRippleTime(d)
  }

  // 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)
  operationalResultField.value = results

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

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

async function oPcancelOffer() {

  const wallet = xrpl.Wallet.fromSeed(operationalSeedField.value)
  let net = getNet()
  const client = new xrpl.Client(net)
  results = 'Connecting to ' + net + '...'
  operationalResultField.value = results
  await client.connect()
  results +=  "\nConnected. Cancelling offer..."
  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)
  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 ' + net + '...'
  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)

  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)  
  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 ' + net + '...'
  operationalResultField.value = results
  await client.connect()
  results += '\nConnected. Accepting sell offer...\n\n'
  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 -------------------------------------------------

  standbyBalanceField.value = (await client.getXrpBalance(standby_wallet.address))
  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)   
  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 ' + net + '...'
  operationalResultField.value = results
  await client.connect()
  results += '\nConnected. Accepting buy offer...'
  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)
  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)
  operationalBalanceField.value = 
    (await client.getXrpBalance(operational_wallet.address))
  operationalBalanceField.value = 
    (await client.getXrpBalance(standby_wallet.address))
  operationalResultField.value = results
  client.disconnect()
}// End of acceptBuyOffer()
```

## 4.transfer-nfts.html

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

```html
<html>
  <head>
    <title>Token Test Harness</title>
    <link href='https://fonts.googleapis.com/css?family=Work Sans' rel='stylesheet'>
    <style>
       body{font-family: "Work Sans", sans-serif;padding: 20px;background: #fafafa;}
       h1{font-weight: bold;}
       input, button {padding: 6px;margin-bottom: 8px;}
       button{font-weight: bold;font-family: "Work Sans", sans-serif;}
       td{vertical-align: middle;}
    </style>
    <script src='https://unpkg.com/xrpl@2.7.0/build/xrpl-latest-min.js'></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:
      &nbsp;&nbsp;
      <input type="radio" id="tn" name="server"
        value="wss://s.altnet.rippletest.net:51233" checked>
      <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">NFT 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">NFT ID</td>
                      <td><input type="text" id="standbyTokenIdField" value="" size="80"/></td>
                    </tr>
                    <tr>
                      <td align="right">NFT 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 NFT</button>
                        <br/>
                        <button type="button" onClick="getTokens()">Get NFTs</button>
                        <br/>
                        <button type="button" onClick="burnToken()">Burn NFT</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 NFT</button>
                        <br/>
                        <button type="button" onClick="oPgetTokens()">Get NFTs</button>
                        <br/>
                        <button type="button" onClick="oPburnToken()">Burn NFT</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">NFT 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">NFT ID</td>
                            <td><input type="text" id="operationalTokenIdField" value="" size="80"/></td>
                          </tr>
                          <tr>
                            <td align="right">NFT 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>
```