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<!doctype>
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<html>
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<head>
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<script type="text/javascript" src="../dist/web3.js"></script>
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<script type="text/javascript">
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var web3 = require('web3');
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web3.setProvider(new web3.providers.HttpProvider("http://localhost:8545"));
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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 take(uint[] a, uint b) constant returns(uint d) {\n" +
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" return a[b];\n" +
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" }\n" +
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"}\n";
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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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var myContract;
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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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document.getElementById('code').innerText = code;
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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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// create contract
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document.getElementById('status').innerText = "transaction sent, waiting for confirmation";
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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(err);
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return;
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// callback fires twice, we only want the second call when the contract is deployed
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} else if(contract.address){
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myContract = contract;
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console.log('address: ' + myContract.address);
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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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function callExampleContract() {
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// this should be generated by ethereum
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var param = parseInt(document.getElementById('value').value);
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// call the contract
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var res = myContract.take([0,6,5,2,1,5,6], param);
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document.getElementById('result').innerText = res.toString(10);
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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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<div id="code"></div>
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<div id="status"></div>
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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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<div>var array = [0,6,5,2,1,5,6];</div>
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<div>var x = array[
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<input type="number" id="value" onkeyup='callExampleContract()'></input>
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];
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</div>
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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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