IoTeX Dapp Sample

Introduction 
The IoTeX dApp Sample is a comfortable environment for learning IoTeX development and is the best way to build a new dApp.
It sets up a basic working example that is cross-blockchain, multi-asset and supports the most popular wallet apps  (including Metamask) out of the box. The example utilizes the latest JavaScript features, provides a nice developer experience and optimizes your app for production. You’ll need to have Node>=10.17.0. 
IoTeX dApp Starter
This sample dApp supports Typescript as includes Vite as a fast build server, React as the frontend framework, Chakra as a components library, and Cypress as a testing suite.
Get Started
To start your IoTeX dApp, you can fork the dApp Sample repository: 
1.Open the repository on GitHub: https://github.com/iotexproject/iotex-dapp-sample-v2.
2.Click the "Use this template" button:
   3. Clone your new repository: 
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git clone https://github.com/<your-github-username>/iotex-dapp-sample-v2.git
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Once the repository is cloned, you can start the demo app with:
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cd iotex-dapp-sample-v2
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yarn install
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yarn start
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See the demo app running on your local machine at localhost:3000, and start building your great new idea!
Cheatsheet
Here's a cheat sheet as a reference:
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import { rootStore, useStore } from '@/store/index';
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​
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const { god } = useStore()
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// or const god = rootStore.god
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​
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god.isConnect   
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​
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god.currentChain 
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god.currentChain.chainId  // for current connected chain id 
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god.currentChain.Coin  // eth/bnb/iotx
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god.currentChain.Coin.balance  // current balance
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// ... see ChainState
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​
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god.currentNetwork     
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god.currentNetwork.account   // for current connected account address
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// ... see NetworkState
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​
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god.setShowConnecter()  // to show/close the Wallet Selector
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​
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god.currentNetwork.loadBalance() // to load chain coin balance
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god.currentNetwork.multicall()  // main function to batch read state from contract
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god.currentNetwork.execContract() // main function to execute contract 
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​
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​
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// multicall/execContract example
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import ERC20ABI from "..."
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​
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const newToken = {
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    address: "0x810ee35443639348adbbc467b33310d2ab43c168",
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    abi: ERC20ABI, 
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    symbol: "",
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    name: "",
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    decimals: "",
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    balance: new BignumberState({}),
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}
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​
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const {address, abi} = newToken
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​
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await god.currentNetwork.multicall([
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    { address, abi, method: 'symbol', handler: (v: any) => (newToken.symbol = v.toString()) },
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    { address, abi, method: 'name', handler: (v: any) => (newToken.name = v.toString()) },
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    { address, abi, method: 'decimals', handler: (v: any) => (newToken.decimals = Number(v.toString())) },
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    { address, abi, method: 'balanceOf', params:[god.currentNetwork.account]  handler: newToken.balance},
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);
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​
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await god.currenNetwork.execContract({adderss,abi,method:"transfer", params:["0x", "100000000000000000"]})
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await god.currenNetwork.execContract({adderss,abi,method:"approve", params:["0x", "100000000000000000"]})
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​
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​
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​
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// to help share the bignumber between on function and UI
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import BN from 'bignumber.js';
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import { BigNumberState } from '@/store/standard/BigNumberState';
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​
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const tokenAmount = new BigNumberState({value: new BN(1000000000000000000), decimals: 18 })
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console.log(tokenAmount.value.toFixed(0), tokenAmount.format)
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// 1000000000000000000, 1
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tokenAmount.setValue(new BN(2000000000000000000))
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// 2000000000000000000, 2
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​
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Mainnet Tokens

Web3 Development

Last modified 29d ago

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Contents

Introduction

Get Started

Cheatsheet