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阅读

您可以通过 "调用 "RPC API 调用智能合约中的函数。在这里可以调用的功能仅限于视图函数，不会改变合约中的任何状态。

导入 @kaiachain/ethers-ext 模块，在 web3 上添加 kaia 功能。

初始化公共客户端，用于与 Kaia 区块链进行只读交互。

设置由 solidity 代码生成的 Abi

定义与之交互的**合同地址

公共客户端会调用 "readContract "方法，从指定地址的合约中查询number函数（一个不修改状态的视图函数）。

SmartContractView.js


import { http, createPublicClient, kairos } from "@kaiachain/viem-ext";
const publicClient = createPublicClient({
    chain: kairos,
    transport: http(),
});
// Example usage
(async () => {
    const abi = [{ "inputs": [{ "internalType": "uint256", "name": "initNumber", "type": "uint256" }], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [{ "indexed": false, "internalType": "uint256", "name": "number", "type": "uint256" }], "name": "SetNumber", "type": "event" }, { "inputs": [], "name": "increment", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [], "name": "number", "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }], "stateMutability": "view", "type": "function" }, { "inputs": [{ "internalType": "uint256", "name": "newNumber", "type": "uint256" }], "name": "setNumber", "outputs": [], "stateMutability": "nonpayable", "type": "function" }];
    const address = "0x95Be48607498109030592C08aDC9577c7C2dD505";
    const result = await publicClient.readContract({
        address,
        abi,
        functionName: 'number'
    })
    console.log('Current contract value', result);
})();

output


❯ js SmartContractView.js
Current contract value 123n