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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
body {
text-align: center;
font-family: Arial, Helvetica, sans-serif;
}
div {
width: 20%;
margin: 0 auto;
display: flex;
flex-direction: column;
}
button {
width: 100%;
margin: 10px 0px 5px 0px;
}
</style>
</head>
<body>
<div>
<h1>This is my dApp!</h1>
<p>Here we can set or get the mood:</p>
<label for="mood">Input Mood:</label> <br />
<input type="text" id="mood" />
<button onclick="getMood()">Get Mood</button>
<button onclick="setMood()">Set Mood</button>
</div>
<script
src="https://cdn.ethers.io/lib/ethers-5.2.umd.min.js"
type="application/javascript">
</script>
<script>
const MoodContractAddress = "0x262eD866f7e38231C186026350293d01038A9f46";
const MoodContractABI = [
{
"inputs": [
{
"internalType": "string",
"name": "_mood",
"type": "string"
}
],
"name": "setMood",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "getMood",
"outputs": [
{
"internalType": "string",
"name": "",
"type": "string"
}
],
"stateMutability": "view",
"type": "function"
}];
let MoodContract;
let signer;
// A Web3Provider wraps a standard Web3 provider, which is
// what MetaMask injects as window.ethereum into each page
const provider = new ethers.providers.Web3Provider(window.ethereum, "goerli");
// MetaMask requires requesting permission to connect users accounts
provider.send("eth_requestAccounts", []).then(() => {
provider.listAccounts().then((accounts) => {
signer = provider.getSigner(accounts[0]);
MoodContract = new ethers.Contract(
MoodContractAddress,
MoodContractABI,
signer
);
});
});
async function getMood() {
const getMoodPromise = MoodContract.getMood();
const Mood = await getMoodPromise;
console.log(Mood);
}
async function setMood() {
const mood = document.getElementById("mood").value;
const setMoodPromise = MoodContract.setMood(mood);
await setMoodPromise;
}
</script>
</body>
</html>