eip-155定义的eth 的chainID
| CHAIN_ID | Chain(s) |
|---|---|
| 1 | Ethereum mainnet |
| 2 | Morden (disused), Expanse mainnet |
| 3 | Ropsten |
| 4 | Rinkeby |
| 5 | Goerli |
| 42 | Kovan |
| 1337 | Geth private chains (default) |
ethers.utils.HDNode.isValidMnemonic（）： 验证助记词是否有效
ethers.utils.getAddress（）：转换为checkSum地址
1.查询余额
- eth余额
let pendingBal = await rpcProvider.getBalance(address, "pending") - 查询其他token余额
const getBalance_USDT = async () => { const contract = new ethers.Contract(USDTaddress, USDTabi, rpcProvide