blob: b08b9a6a8c90e33718934b0818bc11b45e59bd89 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
const web3 = new Web3(new Web3.providers.HttpProvider('http://174.138.14.54:8545'));
Reveal.initialize({
history: true,
backgroundTransition: 'slide'
})
function addToSlide(data, isHeader, isToRobot) {
const pre = document.createElement('pre');
if (isHeader) {
pre.classList.add('header');
}
if (isToRobot) {
pre.classList.add('robot');
}
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 ${block.number}`, true);
block.transactions.forEach((transaction) => {
if (transaction.from == null || transaction.to == null) {
return;
}
const humanReadableValue = web3.fromWei(transaction.value, 'ether').toString();
const isToRobot = transaction.to === '0x5bcd404e6b96dfd033bd362d0f947753d5fb1f57'
addToSlide(`${compactStr(transaction.from)} -> ${humanReadableValue} ETHER -> ${compactStr(transaction.to)}`, false, isToRobot);
});
});
|
