event_inc example

10 years ago · 011fdd91df
parent d5166918e9
commit 011fdd91df
1 changed files with 66 additions and 0 deletions
--- a/example/event_inc.html
+++ b/example/event_inc.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('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>