Friday 1 February 2019

Blockchain - Solidity - GUI - Video

<!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>

<link rel="stylesheet" type="text/css" href="main.css">

<script src="./node_modules/web3/dist/web3.min.js"></script>

</head>
<body>
<div class="container">

<h1>Coursetro Instructor</h1>

<h2 id="instructor"></h2>

<label for="name" class="col-lg-2 control-label">Instructor Name</label>
<input id="name" type="text">

<label for="name" class="col-lg-2 control-label">Instructor Age</label>
<input id="age" type="text">

<button id="button">Update Instructor</button>


</div>

<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>

<script>
if (typeof web3 !== 'undefined') {
web3 = new Web3(web3.currentProvider);
} else {
// set the provider you want from Web3.providers
web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));
}
web3.eth.defaultAccount = web3.eth.accounts[0];
var CoursetroContract = web3.eth.contract([
    {
        "constant": false,
        "inputs": [
            {
                "name": "_fName",
                "type": "string"
            },
            {
                "name": "_age",
                "type": "uint256"
            }
        ],
        "name": "setInstructor",
        "outputs": [],
        "payable": false,
        "type": "function",
        "stateMutability": "nonpayable"
    },
    {
        "constant": true,
        "inputs": [],
        "name": "getInstructor",
        "outputs": [
            {
                "name": "",
                "type": "string"
            },
            {
                "name": "",
                "type": "uint256"
            }
        ],
        "payable": false,
        "type": "function",
        "stateMutability": "view"
    }
]);

var Coursetro = CoursetroContract.at('0xcc74d5766c8d3d611a7db8881fa7d518a2958f75');
console.log(Coursetro);

Coursetro.getInstructor(function(error, result){
if(!error)
{
$("#instructor").html(result[0]+' ('+result[1]+' years old)');
console.log(result);
}
else
console.error(error);
});

$("#button").click(function() {
Coursetro.setInstructor($("#name").val(), $("#age").val());
});

</script>

</body>
</html>

No comments:

Post a Comment