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How to connect to GetBlock with TronWeb

# How to connect to GetBlock with TronWeb

TronWeb is a JavaScript library of TRON full node’s API functions that is used to deploy smart contracts, query blockchain and contract information, trade on the decentralized exchanges and change the blockchain state. In this guide, we will show you how to get started with TronWeb to connect to GetBlock.

Firstly, you will need to add the TronWeb library to your project.

• Npm:
npm install tronweb
• Yarn:
yarn add tronweb

First off, in your javascript file, define TronWeb:

const TronWeb = require('tronweb');

When you instantiate TronWeb you can define:

• fullNode

• solidityNode

• eventServer

• privateKey

you can also set a

• fullHost

Which works as a jolly. If you do so, though, the more precise specification has priority. Supposing you are using a server which provides everything, like TronGrid, you can instantiate TronWeb as:

const tronWeb = new TronWeb({
fullHost: "https://trx.getblock.io/mainnet/",
headers: {"x-api-key": "YOUR_API_KEY_HERE"}
})

For retro-compatibility, though, you can continue to use the old approach, where any parameter is passed separately (using the GetBlock node as an example here):

const fullNode = new TronWeb.providers.HttpProvider("https://trx.getblock.io/mainnet/")
const solidityNode = new TronWeb.providers.HttpProvider("https://trx.getblock.io/mainnet/")
const eventServer = new TronWeb.providers.HttpProvider("https://trx.getblock.io/mainnet/")
const tronWeb = new TronWeb(fullNode, solidityNode, eventServer)
tronWeb.setHeader({"x-api-key":"YOUR_API_KEY_HERE"})

After this you can call any TronWeb method:

tronWeb.trx.getBlock('latest').then(result => {console.log(result)});
tronweb screenshot 1

All API references can be found in the project documentation at https://developers.tron.network/reference

Method response:

tronweb screenshot 2
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