contract with array example

2024-12-25 12:57:17 +00:00 · 2015-01-30 15:43:12 +01:00 · 2015-01-30 15:43:12 +01:00 · 2eedc330bf
commit 2eedc330bf
parent 600c9dd27d
1 changed files with 76 additions and 0 deletions
--- a/example/contract_with_array.html
+++ b/example/contract_with_array.html
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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());
+
+    // solidity source code
+    var source = "" + 
+    "contract test {\n" +
+    "   function multiply(uint[] a) returns(uint d) {\n" +
+    "       return a[0] + a[1];\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);
+        var param2 = parseInt(document.getElementById('value2').value);
+
+        // call the contract
+        var res = contract.call().multiply([param, param2]);
+        document.getElementById('result').innerText = res.toString(10);
+    }
+
+</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" onkeyup='callExampleContract()'></input>
+        <input type="number" id="value2" onkeyup='callExampleContract()'></input>
+    </div>
+    <div id="result"></div>
+</body>
+</html>
+