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<title>dev::Web3</title>
<script src="/parity-utils/web3.js"></script>
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.box {
font-size: 1.5em;
text-align: center;
border-radius: 0.5em;
background: #eee;
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</head>
<body>
<div class="box">
best block #<span id="blockNumber">unknown</span>
</div>
<script>
window.setInterval(function () {
window.web3.eth.getBlockNumber(function (error, blockNumber) {
if (error) {
console.error('error', error);
return;
}
document.getElementById('blockNumber').innerHTML = blockNumber;
});
}, 1000);
</script>
</body>
</html>