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您可以透過「Call」RPC API 來呼叫 Smart Contract 中的函式。 您可以在此呼叫的功能僅限於 view 函式，不會改變 Contract 中的任何狀態。

匯入 @kaiachain/ethers-ext 模組，在 web3 上加入 kaia 功能。

初始化用於與 Kaia 區塊鏈進行唯讀互動的公共用戶端。

設定由 solidity 代碼產生的 Abi

定義合約位址進行互動

公共用戶端會呼叫 readContract 方法，從指定位址的合約中查詢 number 函式（一個不修改狀態的檢視函式）。

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