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@AndrewBuntsev
AndrewBuntsev / gist:e1f974ccf57b5da1eb77070a546935c7
Created May 27, 2019 07:16
JavaScript string memory leak
<html>
<body>
<script>
function createString() {
return "0".repeat(25 * 1024 * 1024).substring(0, 11);
}
var arr = [];
setInterval(function() {
@AndrewBuntsev
AndrewBuntsev / index.js
Last active May 29, 2019 20:43
Browser Task & Microtasks
// Let's get hold of those elements
var outer = document.querySelector('.outer');
var inner = document.querySelector('.inner');
// Let's listen for attribute changes on the
// outer element
new MutationObserver(function() {
console.log('mutate');
}).observe(outer, {
attributes: true
@AndrewBuntsev
AndrewBuntsev / ecosystem.config.js
Last active November 30, 2019 03:11
PM2 ecosystem file
module.exports = {
apps: [{
name: 'Exercise Tracker',
cwd: './boilerplate-exercisetracker',
script: './server.js',
instances: 1,
autorestart: true,
watch: false,
max_memory_restart: '70M',
exp_backoff_restart_delay: 100,
@AndrewBuntsev
AndrewBuntsev / eventBus.js
Created December 12, 2019 20:01 — forked from PierfrancescoSoffritti/eventBus.js
A simple implementation of an event bus in Javascript. More details here: https://medium.com/@soffritti.pierfrancesco/create-a-simple-event-bus-in-javascript-8aa0370b3969
/**
* subscriptions data format:
* { eventType: { id: callback } }
*/
const subscriptions = { }
const getNextUniqueId = getIdGenerator()
function subscribe(eventType, callback) {
const id = getNextUniqueId()
@AndrewBuntsev
AndrewBuntsev / index.html
Last active May 10, 2020 22:00
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"></script>
<script src="https://unpkg.com/c3@0.6.8/c3.js"></script>
<link href="https://unpkg.com/c3@0.6.8/c3.css" rel="stylesheet">
<div id="chart"></div>
<script>
var chart = c3.generate({
bindto: '#chart',
data: {
columns: [
@AndrewBuntsev
AndrewBuntsev / index.html
Created May 10, 2020 22:02
<script>
var chart = c3.generate({
bindto: '#chart',
data: {
columns: [
['data1', 30, 200, 100, 400, 250],
['data2', 50, 20, 10, 40, 25],
['data3', 150, 10, 40, 40, 15],
['data4', 80, 40, 70, 20, 45],
['data5', 30, 60, 35, 90, 40]
@AndrewBuntsev
AndrewBuntsev / sort.js
Created May 10, 2020 22:03
d.sort(function(a, b){
return a.value - b.value;
});
@AndrewBuntsev
AndrewBuntsev / sort.js
Created May 10, 2020 22:04
contents: function (d, defaultTitleFormat, defaultValueFormat, color) {
var $$ = this, config = $$.config,
titleFormat = config.tooltip_format_title || defaultTitleFormat,
nameFormat = config.tooltip_format_name || function (name) { return name; },
valueFormat = config.tooltip_format_value || defaultValueFormat,
text, i, title, value, name, bgcolor;
d.sort(function(a, b){
return a.value - b.value;
});
for (i = 0; i < d.length; i++) {
@AndrewBuntsev
AndrewBuntsev / array.js
Created May 15, 2020 02:22
var objects = [{'Name': 'John', 'Age': 23, 'Profession': 'Accountant'},
{'Name': 'Adam', 'Age': 18, 'Profession': 'Engineer'},
{'Name': 'Vik', 'Age': 46, 'Profession': 'Architect'},
{'Name': 'Jane', 'Age': 36, 'Profession': 'Developer'},
{'Name': 'Rikky', 'Age': 28, 'Profession': 'Developer'}];
@AndrewBuntsev
AndrewBuntsev / sortByCall.js
Created May 15, 2020 02:23
sortBy(objects, 'Profession', {'Name': 'desc'});
console.table(objects);