KenKappler.github.io/JSAPI_2.html at master · KenKappler/KenKappler.github.io · GitHub

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<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8">
		<title>JSAPI_1.html</title>
		<a href="index.html">Back to Contents</a>
		<script type="text/javascript">

		var soliditySource = "contract metaCoin {\n"+
			"	mapping (address => uint) balances;\n" +
			"	function metaCoin() {\n" +
				"		balances[msg.sender] = 10000;\n" +
			"	}\n" +
			"	function send(address receiver, uint amount) {\n" +
				"		if (balances[msg.sender] < amount) return;\n" +
				"		balances[msg.sender] -= amount;\n" +
				"		balances[receiver] += amount;\n" +
			"	}\n" +
		"}";
		var contractDesc = [{
			"name": "send(address,uint256)",
			"type": "function",
			"inputs": [
			{
				"name": "to",
				"type": "address"
			},
			{
				"name": "value",
				"type": "uint256"
			}
			]
		}];

		function sendEther() {
			web3.eth.transact({to: document.querySelector('#recipient').value ,value: document.querySelector('#value').value});
		};

		function createSolidityContract() {
			var address = web3.eth.transact({code: web3.eth.solidity(soliditySource)});
			contract = web3.eth.contract(address, contractDesc);

			};


		//function to send transaction using parameters from the HTML input boxes
		function dataTransaction() {
			var receiverAddress = document.querySelector('#receiverAddress').value;
			var amount = document.querySelector('#amount').value;
			contract.send(receiverAddress, amount);
		};
		</script>
	</head>
	<body>
		<div>
			<div>
				<h3>Transact Example</h3>
			</div>
			<div>
				<input id="recipient" type="text" placeholder="To">
				<input id="value" type="text" placeholder="Value in Wei">
			</div>
			<div>
				<button onclick="sendEther();">Send Ether</button>
			</div>
			<div>
				<h3>Create a contract</h3>
			</div>
			<div>
				<button onclick="createSolidityContract();">Create Solidity Coin Contract</button>
			</div>
			<div>
				<h3>Send some coins</h3>
			</div>
			<div>
				<input id="receiverAddress" class="form-control" type="text" placeholder="Receiver address"></input><br>
				<input id="amount" class="form-control" type="text" placeholder="Amount"></input><br>
			</div>
			<button onclick="dataTransaction();">Send transaction</button>
		</div>
		<div>
			Put in addresses prefixed with '0x' and hit 'Send transaction'
		</div>
	</body>
</html>