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event_inc example

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Marek Kotewicz 2015-02-02 11:52:56 +01:00
parent d5166918e9
commit 011fdd91df
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<!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.HttpSyncProvider('http://localhost:8080'));
var source = "" +
"contract Contract { " +
" event Incremented(bool indexed odd, uint x); " +
" function Contract() { " +
" x = 69; " +
" } " +
" function inc() { " +
" ++x; " +
" Incremented(x % 2 == 1, x); " +
" } " +
" uint x; " +
"}";
var desc = [{
"type":"event",
"name":"Incremented",
"inputs": [{"name":"odd","type":"bool","indexed":true},{"name":"x","type":"uint","indexed":false}],
}, {
"type":"function",
"name":"inc",
"inputs": [],
"outputs": []
}];
var address;
var contract;
var update = function (x) {
document.getElementById('result').innerText = JSON.stringify(x);
};
var createContract = function () {
address = web3.eth.transact({code: web3.eth.solidity(source)});
contract = web3.eth.contract(address, desc);
contract.Incremented({odd: true}).changed(update);
};
var callContract = function () {
contract.call().inc();
};
</script>
</head>
<body>
<div>
<button type="button" onClick="createContract();">create contract</button>
</div>
<div>
<button type="button" onClick="callContract();">test1</button>
</div>
<div id="result">
</div>
</body>
</html>