github.com/jonasnick/go-ethereum@v0.7.12-0.20150216215225-22176f05d387/cmd/mist/assets/examples/coin.html (about)

     1  <!doctype>
     2  <html>
     3  <title>JevCoin</title>
     4  <head>
     5  <script type="text/javascript" src="../ext/bignumber.min.js"></script>
     6  <script type="text/javascript" src="../ext/ethereum.js/dist/ethereum.js"></script>
     7  </head>
     8  <body>
     9  
    10  <h1>JevCoin <code id="contract_addr"></code></h1>
    11  <div>
    12  	<strong>Balance</strong>
    13  	<span id="balance"></strong>
    14  </div>
    15  
    16  <div>
    17  	<span class="amount">Amount:</span>
    18  	<input type="text" id="address" style="width:200px">
    19  	<input type="text" id="amount" style="width:200px">
    20  	<button onclick="transact()">Send</button>
    21  </div>
    22  
    23  <hr>
    24  
    25  <table width="100%" id="table">
    26  	<tr><td style="width:40%;">Address</td><td>Balance</td></tr>
    27  	<tbody id="table_body"></tbody>
    28  </table>
    29  
    30  </body>
    31  
    32  <script type="text/javascript">
    33  	var web3 = require('web3');
    34  	var eth = web3.eth;
    35  
    36  	web3.setProvider(new web3.providers.HttpSyncProvider('http://localhost:8545'));
    37  	var desc = [{
    38  		"name": "balance(address)",
    39  		"type": "function",
    40  		"inputs": [{
    41  			"name": "who",
    42  			"type": "address"
    43  		}],
    44  		"constant": true,
    45  		"outputs": [{
    46  			"name": "value",
    47  			"type": "uint256"
    48  		}]
    49  	}, {
    50  		"name": "send(address,uint256)",
    51  		"type": "function",
    52  		"inputs": [{
    53  			"name": "to",
    54  			"type": "address"
    55  		}, {
    56  			"name": "value",
    57  			"type": "uint256"
    58  		}],
    59  		"outputs": []
    60  	}, {
    61  		"name":"received",
    62  		"type":"event",
    63  		"inputs": [
    64  			{"name":"from","type":"address","indexed":true},
    65  			{"name":"amount","type":"uint256","indexed":true},
    66  		],
    67  	}];
    68  
    69  	var address = localStorage.getItem("address");
    70  	// deploy if not exist
    71  	if (address == null) {
    72  		var code = "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";
    73  		address = web3.eth.transact({data: code});
    74          	localStorage.setItem("address", address);
    75  	}
    76  	document.querySelector("#contract_addr").innerHTML = address.toUpperCase();
    77  
    78  	var contract = web3.eth.contract(address, desc);
    79  	contract.received({from: eth.coinbase}).changed(function() {
    80  		refresh();
    81  	});
    82  
    83  	var ev = contract.SingleTransact({})
    84  	ev.watch(function(log) {
    85  	someElement.innerHTML += "tnaheousnthaoeu";
    86  	});
    87  	
    88  	eth.watch('chain').changed(function() {
    89  		refresh();
    90  	});
    91  
    92  	function refresh() {
    93          	document.querySelector("#balance").innerHTML = contract.balance(eth.coinbase);
    94  
    95  		var table = document.querySelector("#table_body");
    96  		table.innerHTML = ""; // clear
    97  
    98  		var storage = eth.storageAt(address);
    99  		table.innerHTML = "";
   100  		for( var item in storage ) {
   101  			table.innerHTML += "<tr><td>"+item.toUpperCase()+"</td><td>"+web3.toDecimal(storage[item])+"</td></tr>";
   102  		}
   103  	}
   104  
   105  	function transact() {
   106  		var to = document.querySelector("#address").value;
   107  		if( to.length == 0 ) {
   108  			to = "0x4205b06c2cfa0e30359edcab94543266cb6fa1d3";
   109  		} else {
   110  			to = "0x"+to;
   111  		}
   112  
   113  		var value = parseInt( document.querySelector("#amount").value );
   114  
   115  		contract.send( to, value );
   116  	}
   117  
   118  	refresh();
   119  </script>
   120  </html>
   121  
   122  <!--
   123  contract JevCoin {
   124      function JevCoin()
   125      {
   126          balances[msg.sender] = 1000000;
   127      }
   128   
   129      event changed(address indexed from, address indexed to);
   130      function send(address to, uint value)
   131      {
   132          if( balances[msg.sender] < value ) return;
   133   
   134          balances[msg.sender] -= value;
   135          balances[to] += value;
   136   
   137          changed(msg.sender, to);
   138      }
   139   
   140      function balance(address who) constant returns(uint t)
   141      {
   142          t = balances[who];
   143      }
   144   
   145      mapping(address => uint256) balances;
   146   }
   147  -!>