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  2. dApp Developers
  3. SDK & Libraries for interacting with Klaytn Node
  4. caver-js
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  6. API references
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  8. Transaction

Legacy

sendTransaction (Legacy)

caver.klay.sendTransaction(transactionObject [, callback])

Sends a transaction to the network.

Note: Only the account having AccountKeyLegacy can send this transaction.

Parameters

The parameters of sendTransaction are a transaction object and a callback function.

Name
Type
Description

transactionObject

Object

The transaction object to send.

callback

Function

(optional) Optional callback, returns an error object as the first parameter and the result as the second.

A transaction object of type LEGACY has the following structure:

Name
Type
Description

from

String

Address of this transaction sender.

to

String

(optional) The destination address of the message, left undefined for a contract-creation transaction.

value

Number | String | BN | BigNumber

(optional) The value transferred for the transaction in peb, also the endowment if it's a contract-creation transaction.

gas

Number

The maximum amount of gas willing to pay for the transaction (unused gas is refunded).

gasPrice

Number

(optional) Gas price provided by the sender in peb. The gasPrice must be the same as the unitPrice set in the Klaytn node.

data

String

nonce

Number

(optional) Integer of a nonce. If omitted, it will be set by caver-js via calling caver.klay.getTransactionCount.

Return Value

The callback will return the 32-byte transaction hash.

PromiEvent: A promise combined event emitter. Will be resolved when the transaction receipt is available. Additionally the following events are available:

  • "transactionHash" returns String: Is fired right after the transaction is sent and a transaction hash is available.

  • "receipt" returns Object: Is fired when the transaction receipt is available.

  • "error" returns Error: Is fired if an error occurs during sending. On an out-of-gas error, the second parameter is the receipt.

Example

const account = caver.klay.accounts.wallet.add('0x{private key}')

var code = "0x603d80600c6000396000f3007c01000000000000000000000000000000000000000000000000000000006000350463c6888fa18114602d57005b6007600435028060005260206000f3";

// using the callback
caver.klay.sendTransaction({
    from: account.address,
    data: code // deploying a contracrt
}, function(error, hash){
    ...
});

// using the promise
caver.klay.sendTransaction({
    from: account.address,
    to: '0x11f4d0A3c12e86B4b5F39B213F7E19D048276DAe',
    value: '1000000000000000'
})
.then(function(receipt){
    ...
});

// using the event emitter
caver.klay.sendTransaction({
    from: account.address,
    to: '0x11f4d0A3c12e86B4b5F39B213F7E19D048276DAe',
    value: '1000000000000000'
})
.on('transactionHash', function(hash){
    ...
})
.on('receipt', function(receipt){
    ...
})
.on('error', console.error); // If an out-of-gas error, the second parameter is the receipt.
PreviousTransactionNextValue Transfer

Last updated 2 years ago

(optional) Either an containing the data of the function call on a contract, or in the case of a contract-creation transaction the initialization code.

ABI byte string