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<html> | |
<head> | |
<script type="text/javascript" src="bignumber.min.js"></script> | |
<script type="text/javascript" src="ethereum.js"></script> | |
<script type="text/javascript"> | |
var web3 = require('web3'); | |
web3.setProvider(new web3.providers.HttpSyncProvider('http://localhost:8080')); | |
var coinbase = web3.eth.coinbase; | |
console.log('coinbase:'+coinbase) | |
var balance = web3.eth.balanceAt(coinbase); | |
console.log('balance:'+balance.toString()); | |
function watchBalance() { | |
var coinbase = web3.eth.coinbase; | |
var originalBalance = 0; | |
var balance = web3.eth.balanceAt(coinbase); | |
var originalBalance = web3.toDecimal(balance); | |
document.getElementById('original').innerText = 'original balance: ' + originalBalance + ' watching...'; | |
web3.eth.watch('pending').changed(function() { | |
balance = web3.eth.balanceAt(coinbase) | |
var currentBalance = web3.toDecimal(balance); | |
document.getElementById("current").innerText = 'current: ' + currentBalance; | |
document.getElementById("diff").innerText = 'diff: ' + (currentBalance - originalBalance); | |
}); | |
} | |
</script> | |
</head> | |
<body> | |
<h1>coinbase balance</h1> | |
<button type="button" onClick="watchBalance();">watch balance</button> | |
<div></div> | |
<div id="original"></div> | |
<div id="current"></div> | |
<div id="diff"></div> | |
</body> | |
</html> |
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