first_exercise/index.html at master · etherstudy/first_exercise · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>myLottery</title>
    <link rel="stylesheet" href="stylesheets/style.css">
    <script src="https://cdn.jsdelivr.net/gh/ethereum/web3.js/dist/web3.min.js"></script>
    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
</head>
<body>
    <div class="container">
        <h2 id="output"></h2>

        <img id="loader" src="https://loading.io/spinners/double-ring/lg.double-ring-spinner.gif">

        <label class="col-lg-2 control-label"> Name</label>
        <input id="name" type="text">
        <label class="col-lg-2 control-label"> Age</label>
        <input id="age" type="text">
        <button id="button">Set</button>

    </div>

    <script>
    //-----------------------
    // 0. Web3 Connect
    //-----------------------
    if (typeof web3 !== 'undefined') {
        web3 = new Web3(web3.currentProvider);
    } else {
        web3 = new Web3(new Web3.providers.HttpProvider("http://127.0.0.1:8545"));
    }
    web3.eth.defaultAccount = web3.eth.accounts[0];
    console.log(web3.eth.defaultAccount);

    var ABI = [
        {
            "constant": false,
            "inputs": [
                {
                    "name": "_name",
                    "type": "string"
                },
                {
                    "name": "_age",
                    "type": "uint256"
                }
            ],
            "name": "setVal",
            "outputs": [],
            "payable": true,
            "stateMutability": "payable",
            "type": "function"
        },
        {
            "constant": true,
            "inputs": [],
            "name": "getVal",
            "outputs": [
                {
                    "name": "",
                    "type": "string"
                },
                {
                    "name": "",
                    "type": "uint256"
                }
            ],
            "payable": false,
            "stateMutability": "view",
            "type": "function"
        },
        {
            "anonymous": false,
            "inputs": [
                {
                    "indexed": false,
                    "name": "name",
                    "type": "string"
                },
                {
                    "indexed": false,
                    "name": "age",
                    "type": "uint256"
                }
            ],
            "name": "First",
            "type": "event"
        }
    ];
    var myContract = web3.eth.contract(ABI);
    var myFirst = myContract.at('0xb1a858d0d62b3b1f146310ab9550c8dba617964a'); // Please change to your own contract-account.
    console.log(myFirst);

    //-----------------------
    // 1. Get
    //-----------------------
    myFirst.getVal(function(error, result) {
        if (!error) {
            $("#output").html('name : ' + result[0]+' ('+result[1]+' years old)');
        } else {
            console.log(error);
        }
    });

    //-----------------------
    // 2. Set
    //-----------------------
    $("#button").click(function() {
         $("#loader").show();
        myFirst.setVal($("#name").val(), $("#age").val());
    });

    //-----------------------
    // 3. Event Watch
    //-----------------------
    var firstEvent = myFirst.First();
    firstEvent.watch(function(error, result){
        if (!error)
        {
            $("#loader").hide();
            $("#output").html('name : ' + result.args.name+' ('+ result.args.age + ' years old)');
        } else {
            $("#loader").hide();
            console.log(error);
        }
    });
    </script>

</body>
</html>