Moment.js is a legacy project, now in maintenance mode. In most cases, you should choose a different library.
See some alternatives at the end of this post.

Proceed at your own peril

Moment.js is a mutable wrapper with a fluent interface for the native JavaScript date object (property _d). Use .toDate() to convert back to a JavaScript date.

Update for Husky v9
A lot has changed in Husky since this blog post. See the 2024 update of this article instead!

Avoid pushing changes that break the build with githooks and Husky.

typicode/husky : 🐺 Git hooks made easy

Some git commands and scripts that come in handy from time to time.

A free and open source Chrome Extension that adds Github stars badges to all links on a web page.

Before: https://github.com/sindresorhus/awesome
After: sindresorhus/awesome

A cheat sheet for the regex syntax in JavaScript.

MDN RegExp Guide

TL&DR

/^$/.test(''); // boolean
'ok'.replace(/(o)(k)/g, '$2$1');
// Other replacements:
// $$ (literal), $& (all), $` (before), $' (after), $<name>

const matchG = 'aaa'.match(/a/g);
matchG == ['a', 'a', 'a'];

const matchNoG = 'str'.match(/(st)r/);
matchNoG == Object.assign(['str', 'st'], {groups: undefined, index: 0, input: 'str'});
matchNoG == /(st)r/.exec('str');

Talk to the Duck

When confronted with a problem, don’t ask the person next to you for help right away, he’s probably doing something important as well!

Instead, first tell the duck about it - out loud. If you don’t get to a solution, start explaining your problem in more and more detail until it hits you. If the mere explanation led to a solution, you avoid unwillingly turning your colleague into a CardboardProgrammer.

This is something for me (or anyone else really) because I keep forgetting all this stuff.

• Use {: .hide-from-excerpt} to do just that.
• img size must be 360x300. bigimg is 1400x262.
• A —
• Pragmatic Tips

The Array.prototype functions have been available for a long time but it’s since Arrow functions that “Linq lambda syntax”-like functionality is available in JavaScript.

This blog post explains the most common functions by comparing them to their C# equivalents.

A basic example:

// JavaScript
const result = [0, 1, 2, 3, null]
    .filter(x => x !== null)
    .map(x => x * 10)
    .sort((a, b) => b - a);

expect(result).toEqual([30, 20, 10, 0]);

// C#
var result = new int?[] {0, 1, 2, 3, null}
    .Where(x => x != null)
    .Select(x => x * 10)
    .OrderByDescending(x => x)
    .ToArray();