solidity-sample/activity.html at master · gonsakon/solidity-sample · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="js/web3.min.js"></script>
</head>
<body>
    <h2>以太報名平台</h2>
    <h3>報名人數：<em id="people"></em></h3>
    <h4>報名費為 1.5 eth</h4>
    <input type="button" id="send" value="報名">
    <script>
        var web3 = new Web3(window.web3.currentProvider);
        var Contract;
        var abi = [{"constant":true,"inputs":[],"name":"cost","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_applicant","type":"address"}],"name":"getTicket","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"manager","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"payAll","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"people","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"list","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_manager","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"}];
        var address = '0x58fd12F3040e020d98374Cf07fb8009656c8D276';
        async function init(){
            Contract = await new web3.eth.Contract(abi,address);
            Contract.methods.people().call().then(function(num){
                document.getElementById('people').textContent = num;
            });

        }
        init();
        async function send(){
            var accounts = await web3.eth.getAccounts();
            Contract.methods.getTicket(accounts[0])
            .send({from:accounts[0],value:web3.utils.toWei(0.15, "ether")})
            .then(function(data){
                console.log(data);
            })

        }
        document.getElementById('send').addEventListener('click',send);
    </script>
</body>
</html>