web3 ethers入门
合约部署地址
https://sepolia.etherscan.io/tx/0x8cd0d1be58e58b5b7b2d7ebab1d1f5c13a21e162b0986e205688b6e0a68c5f66
可进行修改赋值的新合约HAS
https://sepolia.etherscan.io/tx/0x38b476bab15af76701f96207501350dc7c07b030549a9ca2b2da8cc42ed36b8d
https://sepolia.etherscan.io/tx/0x8cd0d1be58e58b5b7b2d7ebab1d1f5c13a21e162b0986e205688b6e0a68c5f66
https://sepolia.etherscan.io/tx/0x38b476bab15af76701f96207501350dc7c07b030549a9ca2b2da8cc42ed36b8d