web3.js进行trc20转账

要使用web3.js进行TRC20转账，需要遵循以下步骤：

1. 首先，连接到以太坊节点。

const Web3 = require('web3');
const web3 = new Web3('https://api.trongrid.io');

2. 加载TRC20合约。

const contractAddress = 'TRC20合约地址';
const contractABI = [{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"}, {"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"}, {"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"}, {"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"}, {"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"}];
const contract = new web3.eth.Contract(contractABI, contractAddress);

3. 获取发送地址的私钥和接收地址。

const privateKey = '发送地址的私钥';
const fromAddress = '发送地址';
const toAddress = '接收地址';

4. 构造转账交易。

const amount = '要转账的数量';
const tokenAmount = web3.utils.toHex(amount * Math.pow(10, decimals));
const data = contract.methods.transfer(toAddress, tokenAmount).encodeABI();
const gasPrice = await web3.eth.getGasPrice();
const gasLimit = '设置的gasLimit';
const nonce = await web3.eth.getTransactionCount(fromAddress);
const tx = {
  from: fromAddress,
  to: contractAddress,
  data: data,
  gasPrice: gasPrice,
  gas: gasLimit,
  nonce: nonce
};

其中，gasLimit需要根据实际情况设置，可以使用TRON的测试网络进行调试，获取合适的值。

5. 签名交易并发送。

const signedTx = await web3.eth.accounts.signTransaction(tx, privateKey);
const txHash = await web3.eth.sendSignedTransaction(signedTx.rawTransaction);
console.log('交易已发送，交易Hash：', txHash.transactionHash);

这样就完成了TRC20转账。