<!doctype>
<html>
<head>
<script type="text/javascript" src="js/bignumber.js/bignumber.min.js"></script>
<script type="text/javascript" src="../dist/ethereum.js"></script>
<script type="text/javascript">
var web3 = require('web3');
web3.setProvider(new web3.providers.QtSyncProvider());
// solidity source code
var source = "" +
"contract test {\n" +
" /// @notice Will multiply `a` by 7. \n" +
" function multiply(uint a) returns(uint d) {\n" +
" return a * 7;\n" +
" }\n" +
"}\n";
// contract description, this will be autogenerated somehow
var desc = [{
"name": "multiply(uint256)",
"type": "function",
"inputs": [
{
"name": "a",
"type": "uint256"
}
],
"outputs": [
{
"name": "d",
"type": "uint256"
}
]
}];
var contract;
function createExampleContract() {
// hide create button
document.getElementById('create').style.visibility = 'hidden';
document.getElementById('source').innerText = source;
// create contract
var address = web3.eth.transact({code: web3.eth.solidity(source)});
contract = web3.eth.contract(address, desc);
document.getElementById('call').style.visibility = 'visible';
}
function callExampleContract() {
// this should be generated by ethereum
var param = parseInt(document.getElementById('value').value);
// transaction does not return any result, cause it's not synchronous and we don't know,
// when it will be processed
contract.transact().multiply(param);
document.getElementById('result').innerText = 'transaction made';
}
</script>
</head>
<body>
<h1>contract</h1>
<div id="source"></div>
<div id='create'>
<button type="button" onClick="createExampleContract();">create example contract</button>
</div>
<div id='call' style='visibility: hidden;'>
<input type="number" id="value"></input>
<button type="button" onClick="callExampleContract()">Call Contract</button>
</div>
<div id="result"></div>
</body>
</html>