BSC/BNB 链质押挖矿 dapp 系统开发（案例演示）

import Web3 from 'web3'
const BSC_CHAIN_ID = 56
export const changeToBscNetwork = async (  library: any,  onError?: () => void) => {  try {    await library.provider.request({      method: 'wallet_switchEthereumChain',      params: [{ chainId: Web3.utils.toHex(BSC_CHAIN_ID) }]    })  } catch (error: any) {    if (error.code === 4902) {      try {        library.provider.request({          jsonrpc: '2.0',          method: 'wallet_addEthereumChain',          params: [            {              chainId: '0x38',              chainName: 'Binance Smart Chain Mainnet',              rpcUrls: ['https://bsc-dataseed.binance.org/'],              nativeCurrency: {                name: 'BNB',                symbol: 'BNB',                decimals: 18              },              blockExplorerUrls: ['https://bscscan.com']            }          ],          id: 0        })      } catch (e) {        console.error('changeNetwork addEthereumChain error', e)      }    }    onError?.()    console.error('changeNetwork error', error)  }}

library.provider.request({  jsonrpc: '2.0',  method: 'wallet_addEthereumChain',  params: [    {      chainId: '0x38',      chainName: 'Binance Smart Chain Mainnet',      rpcUrls: ['https://bsc-dataseed.binance.org/'],      nativeCurrency: {        name: 'BNB',        symbol: 'BNB',        decimals: 18      },      blockExplorerUrls: ['https://bscscan.com']    }  ],  id: 0})