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<h1 align="center">
<a href="https://tronweb.network">
<img align="center" src="https://raw.githubusercontent.com/tronprotocol/tronweb/master/assets/logo.png"/>
</a>
</h1>
<p align="center">
<a href="https://discord.gg/FgvVFQgdCW">
<img src="https://img.shields.io/badge/chat-on%20discord-brightgreen.svg">
</a>
<a href="https://github.com/tronprotocol/tronweb/issues">
<img src="https://img.shields.io/github/issues/tron-us/tronweb.svg">
</a>
<a href="https://github.com/tronprotocol/tronweb/pulls">
<img src="https://img.shields.io/github/issues-pr/tron-us/tronweb.svg">
</a>
<a href="https://github.com/tronprotocol/tronweb/graphs/contributors">
<img src="https://img.shields.io/github/contributors/tron-us/tronweb.svg">
</a>
<a href="LICENSE">
<img src="https://img.shields.io/github/license/tron-us/tronweb.svg">
</a>
</p>
## What is TronWeb?
[TronWeb](https://tronweb.network) aims to deliver a unified, seamless development experience influenced by Ethereum's [Web3](https://github.com/ethereum/web3.js/) implementation. We have taken the core ideas and expanded upon it to unlock the functionality of TRON's unique feature set along with offering new tools for integrating DApps in the browser, Node.js and IoT devices.
**Project scope**
Any new TRON feature will be incorporated into TronWeb. Changes to the API to improve quality-of-life are in-scope for the project. We will not necessarilly maintain feature parity with Web3.js going forward as this is a separate project, not a synchronized fork.
## HomePage
__[tronweb.network](https://tronweb.network)__
## Compatibility
- Version built for Node.js v6 and above
- Version built for browsers with more than 0.25% market share
You can access either version specifically from the [dist](dist) folder.
TronWeb is also compatible with frontend frameworks such as:
- Angular
- React
- Vue.
You can also ship TronWeb in a Chrome extension.
## Installation
### Node.js
```bash
npm install tronweb
```
or
```bash
yarn add tronweb
```
### Browser
Then easiest way to use TronWeb in a browser is to install it as above and copy the dist file to your working folder. For example:
```
cp node_modules/tronweb/dist/TronWeb.js ./js/tronweb.js
```
so that you can call it in your HTML page as
```
<script src="./js/tronweb.js"><script>
```
This project is also published on NPM and you can access CDN mirrors of this release (please use sub-resource integrity for any `<script>` includes).
## Testnet
Shasta is the official Tron testnet. To use it use the following endpoint:
```
https://api.shasta.trongrid.io
```
Get some Shasta TRX at https://www.trongrid.io/shasta and play with it.
Anything you do should be explorable on https://shasta.tronscan.org
## Your local private network for heavy testing
You can set up your own private network, running Tron Quickstart. To do it you must [install Docker](https://docs.docker.com/install/) and, when ready, run a command like
```bash
docker run -it --rm \
-p 9090:9090 \
-e "defaultBalance=100000" \
-e "showQueryString=true" \
-e "showBody=true" \
-e "formatJson=true" \
--name tron \
trontools/quickstart
```
[More details about Tron Quickstart on GitHub](https://github.com/tron-us/docker-tron-quickstart)
## Creating an Instance
First off, in your javascript file, define TronWeb:
```js
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:
```js
const tronWeb = new TronWeb({
fullHost: 'https://api.trongrid.io',
headers: { "TRON-PRO-API-KEY": 'your api key' },
privateKey: 'your private key'
})
```
For retro-compatibility, though, you can continue to use the old approach, where any parameter is passed separately:
```js
const tronWeb = new TronWeb(fullNode, solidityNode, eventServer, privateKey)
tronWeb.setHeader({ "TRON-PRO-API-KEY": 'your api key' });
```
If you are, for example, using a server as full and solidity node, and another server for the events, you can set it as:
```js
const tronWeb = new TronWeb({
fullHost: 'https://api.trongrid.io',
eventServer: 'https://api.someotherevent.io',
privateKey: 'your private key'
}
)
```
If you are using different servers for anything, you can do
```js
const tronWeb = new TronWeb({
fullNode: 'https://some-node.tld',
solidityNode: 'https://some-other-node.tld',
eventServer: 'https://some-event-server.tld',
privateKey: 'your private key'
}
)
```
## A full example
The better way to understand how to work with TronWeb is go to the demo directory in this repository.
If you'd like to connect with tronlink app and chrome extention and develop a dapp on tron, you could run the demo in path demo/tron-dapp-react-demo.
If you'd like to develop only with tronweb dependency, you could run the demo in path demo/tronweb-demo.
## Contributions
In order to contribute you can
* fork this repo and clone it locally
* install the dependencies — `npm i`
* do your changes to the code
* build the TronWeb dist files — `npm run build`
* run a local private network using Tron Quickstart
* run the tests — `npm test:node`
* push your changes and open a pull request
Contact the team at https://cn.developers.tron.network/docs/online-technical-support
## Recent History
__5.1.0__
- Add `freezeBalanceV2`, `unfreezeBalanceV2`, `delegateResource`, `undelegateResource` and `withdrawExpireUnfreeze` function in transactiobBuiler lib to support stakeV2
- Support `tronWeb.transactionBuilder.estimateEnergy` to estimate energy for triggersmartcontract transaction
- Add `getDelegatedResourceV2`, `getDelegatedResourceAccountIndexV2`, `getCanDelegatedMaxSize`, `getAvailableUnfreezeCount` and `getCanWithdrawUnfreezeAmount` function to query account resource info
__5.0.0__
- Add `tronWeb.utils.transaction` lib to serialize and deserialize transaction
- Add `tronWeb.utils.transaction.txJsonToPb` function to convert transaction json to protobuf
- Add `tronWeb.utils.transaction.txPbToTxID` function to get txID from transaction protobuf
- Support new transaction builder `createAccount`
__4.4.0__
- Support `createRandom` and `fromMnemonic` function
- Add `tronWeb.utils.message` lib, which includes `hashMessage`, `signMessage` and `verifyMessage`
- Add `signMessageV2` and `verifyMessageV2` in `tronWeb.trx` lib which can support plain text signature and verification
- Add `size` filter for event watch
__4.3.0__
- Support `_signTypedData`
__4.2.0__
- Add the name key when the `call()` and `send()` methods has only one return value
- Optimize the `TriggerConstantContract()` method
- Update `axios` to version 0.26.1
- Update `karma` to version 6.3.17
- Update `puppeteer` to version 13.5.1
__4.1.0__
- Add `encodeParamsV2ByABI` and `decodeParamsV2ByABI` functions in `tronWeb.utils.abi` lib
- Support abi v2 for `triggerSmartContract`, `createSmartContract`, `call` and `send` methods
- Update `validator` to version 13.7.0
- Update `axios` to version 0.24.0
- Update discord group link
__4.0.1__
- Set _isConstant as true for call method
- Ignore max feeLimit check
- Change git repository url
__4.0.0__
- Support `broadcastHex` method
- Ignore fullnode version check when calling `createToken` method
- Update dependencies version
- Add strict mode for `pkToAddress` method
__3.2.7__
- Add options `rawParameter` that format of the parameters method and args when creating or triggering a contract
- Update `elliptic` to the latest version 6.5.4
- Update `validator` to the latest version 13.6.0
__3.2.6__
- Add setHeader function
__3.2.5__
- Set feeLimit max value as 5000 TRX
__3.2.4__
- Set feeLimit default value as 150 TRX
__3.2.3__
- Support triggerSmartContract function with empty character functionSelector and empty array parameters
- The triggerSmartContract function Support for anonymous contract parameter incoming
__3.2.2__
- Set feeLimit default value as 40 TRX
- The `createToken` method supports 0 in its precision
__3.1.0__
- Update `elliptic` to the latest version 6.5.3
- Update `ethers` to the latest version 5.0.8
- Fix `loadAbi()`
__3.0.0__
- Support sidechain for SunNetwork
- Set feeLimit default value as 20 TRX
__2.10.2__
- Support toHex function with a space and empty character as parameter
- The sign function supports visible as true.
- Fix delete the private key in test files
- Fix start method returned from watch is undefined #45
__2.10.1__
* Fix `trx.listExchangesPaginated`
__2.10.0__
* Fix `trx.getTokenListByName`
__2.9.0__
* Support smart contracts with function that requires an array of addresses as a parameter, included the constructor during the deployment
__2.8.1__
* Add options `keepTxID` to show also the txID when triggering a contract with `shouldPollResponse`
__2.8.0__
* Improve in the plugin architecture allows someone to implement a full lib at the same level of Trx and TransactionBuilder
__2.7.4__
* Fix bugs of trx.getBrokerage and trx.getReward function
__2.7.3__
* Support new apis related to Java-Tron 3.6.5
* Original withdrawBlockRewards method support to withdraw user's reward
__2.6.8__
* Support extension of transaction expiration
* Allow to add data to the transaction
* Many minor changes and fixes
__2.6.3__
* Support get unconfirmed transaction function
__2.6.0__
* Support trigger constant contract, clear abi and add account by id
* Add permission id option in functions related to creating transaction
* Support multi-sign without permission id
__2.5.6__
* Reverse PR #6
__2.5.5__
* Ignore `receiverAddress` during `freezeBalance` and `unfreezeBalance` if it is equal to the owner address
__2.5.4__
* Adds cache in Trx to cache Contracts locally and make the process more efficient
__2.5.2__
* Adds static methods `Trx.signString` and `Trx.verifySignature`
__2.5.0__
* Allows freeBandwidth, freeBandwidthLimit, frozenAmount and frozenDuration to be zero
__2.3.7__
* Get rid of jssha to reduce the size of the package a little bit.
__2.3.6__
* Supports `/wallet/getapprovedlist` and `/wallet/getsignweight` JavaTron API.
* Adds test for multi-sign workflow.
__2.3.5__
* Fixes a typo in `#event.getEventsByContractAddress` naming.
__2.3.4__
* Adds options to `#plugin.register` to pass parameters to `pluginInterface`.
__2.3.3__
* Adds filters during event watching.
__2.3.2__
* Removes mixed approach instantiating tronWeb. Before you could pass the servers as an object, and the privateKey as a separate parameter. Now, you pass them either in the options object or in the params.
__2.3.1__
* Adds support for not-tld domain, like http://localhost
* Improve the new format, allow passing the privateKey as a property in the option object
__2.3.0__
* Introduces new format to instantiate tronWeb, passing an options object instead that `fullNode`, `solidityNode` and `eventServer` as separate params
* Fixes bug in `_watch` which causes a continuous update of the `since` parameter
## Licence
TronWeb is distributed under a MIT licence.
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