blob: 3f95d001584dffd98c8fe63a075c6e1e3101b012 (
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const web3 = new Web3(new Web3.providers.HttpProvider('http://95.85.1.235:8545'));
Reveal.initialize({
history: true,
backgroundTransition: 'slide'
})
function addToSlide(data, isHeader) {
const pre = document.createElement('pre');
if (isHeader) {
pre.classList.add('header');
}
pre.textContent = data;
document.querySelector('#blockchain').appendChild(pre);
}
function compactStr(str) {
return str.substr(0, 10) + '...' + str.substr(str.length - 10);
}
// addToSlide('012345678901234567890123456789012345678901234567890123456789')
// Listen for incoming blocks.
const filter = web3.eth.filter('latest');
filter.watch((err, blockHash) => {
// New block created
if (err) {
throw err;
}
const block = web3.eth.getBlock(blockHash, true);
console.log(block);
addToSlide(`Block ${block.number}`, true);
block.transactions.forEach((transaction) => {
if (transaction.from == null || transaction.to == null) {
return;
}
const humanReadableValue = web3.fromWei(transaction.value, 'ether').toString();
addToSlide(`${compactStr(transaction.from)} -> ${humanReadableValue} ETHER -> ${compactStr(transaction.to)}`);
});
});
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