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DOM: Traverse and manipulate

DOM

Optional chaining (?.)

Nullish coalescing operator (??)

Console methods for better logging

Console

Email validation regex

Regex

Express server boilerplate

Express.js

Node.js

Boilerplate

Remove all “falsy” values from an Array

You can remove all “falsy” values from an Array by filtering for Boolean.

const friends = ['Jake',null,'Cassidy',undefined,'Joshy',undefined,'Jordyn']const filteredFriends = friends.filter(Boolean)
filteredFriends // ["Jake", "Cassidy", "Joshy", "Jordyn"]

Vanilla JS

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