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75 lines
2.2 KiB
75 lines
2.2 KiB
10 years ago
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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 source 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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var source = "605280600c6000396000f3006000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa114602e57005b60376004356041565b8060005260206000f35b6000600782029050604d565b91905056";
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// contract description, this is autogenerated using solc CLI
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var desc = [{
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"constant" : true,
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"inputs" : [{
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"name" : "a",
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"type" : "uint256"
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}],
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"name" : "multiply",
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"outputs" : [{
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"name" : "d",
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"type" : "uint256"
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}],
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"type" : "function"
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}];
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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('source').innerText = source;
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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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var Contract = web3.eth.contract(desc);
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myContract = new Contract({data: source});
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document.getElementById('call').style.visibility = 'visible';
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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.multiply(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="source"></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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<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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