2014-11-14 12:11:47 +00:00
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<!doctype>
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<html>
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<head>
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2015-04-20 11:52:40 +00:00
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<script type="text/javascript" src="../dist/web3.js"></script>
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2014-11-14 12:11:47 +00:00
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<script type="text/javascript">
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2015-04-07 02:39:47 +00:00
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var web3 = require('web3');
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2015-04-20 12:38:08 +00:00
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web3.setProvider(new web3.providers.HttpProvider("http://localhost:8545"));
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2014-11-14 12:11:47 +00:00
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2015-05-13 10:05:38 +00:00
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// solidity code code
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var source = "" +
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"contract test {\n" +
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" function multiply(uint a) constant returns(uint d) {\n" +
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" return a * 7;\n" +
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" }\n" +
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"}\n";
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2015-05-21 10:02:15 +00:00
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var compiled = web3.eth.compile.solidity(source);
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var code = compiled.test.code;
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// contract json abi, this is autogenerated using solc CLI
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var abi = compiled.test.info.abiDefinition;
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2014-11-14 12:11:47 +00:00
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2015-02-24 09:36:54 +00:00
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var myContract;
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2014-11-14 12:11:47 +00:00
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function createExampleContract() {
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// hide create button
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document.getElementById('create').style.visibility = 'hidden';
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2015-05-13 10:05:38 +00:00
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document.getElementById('code').innerText = code;
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2014-11-14 12:11:47 +00:00
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2015-04-20 12:38:08 +00:00
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// let's assume that coinbase is our account
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web3.eth.defaultAccount = web3.eth.coinbase;
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2015-02-24 09:36:54 +00:00
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2015-05-13 15:46:49 +00:00
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var watch = web3.eth.filter('latest');
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2015-04-20 12:38:08 +00:00
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// create contract
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2015-07-07 09:51:13 +00:00
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web3.eth.contract(abi).new({data: code}, function (err, contract) {
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if (err) {
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console.error('contract creation failed!');
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return;
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2015-05-13 15:46:49 +00:00
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}
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2015-07-07 09:51:13 +00:00
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myContract = contract;
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console.log('address: ' + myContract.address);
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document.getElementById('status').innerText = "transaction sent, waiting for confirmation";
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watch.watch(function (err, hash) {
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var block = web3.eth.getBlock(hash, true);
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var contractMined = block.transactions.reduce(function (mined, th) {
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// TODO: compiled code do not have 0x prefix
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return mined || (th.from === web3.eth.defaultAccount && th.input.indexOf(code) !== -1);
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}, false);
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2015-05-13 15:46:49 +00:00
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2015-07-07 09:51:13 +00:00
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if (contractMined) {
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document.getElementById('status').innerText = 'Mined!';
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document.getElementById('call').style.visibility = 'visible';
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}
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});
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});
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2014-11-14 12:11:47 +00:00
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}
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function callExampleContract() {
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// this should be generated by ethereum
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2015-01-08 14:31:46 +00:00
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var param = parseInt(document.getElementById('value').value);
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2014-11-14 12:11:47 +00:00
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// call the contract
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2015-04-20 12:38:08 +00:00
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var res = myContract.multiply(param);
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2015-01-27 10:53:34 +00:00
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document.getElementById('result').innerText = res.toString(10);
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2014-11-14 12:11:47 +00:00
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}
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</script>
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</head>
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<body>
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<h1>contract</h1>
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2015-05-13 10:05:38 +00:00
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<div id="code"></div>
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2015-05-13 15:46:49 +00:00
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<div id="status"></div>
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2014-11-14 12:11:47 +00:00
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<div id='create'>
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<button type="button" onClick="createExampleContract();">create example contract</button>
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</div>
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<div id='call' style='visibility: hidden;'>
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<input type="number" id="value" onkeyup='callExampleContract()'></input>
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</div>
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<div id="result"></div>
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</body>
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</html>
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