JavaScript Snippets
The JavaScript snippet collection contains a wide variety of ES6 helper functions. It includes helpers for dealing with primitives, arrays and objects, as well as algorithms, DOM manipulation functions and Node.js utilities.
Parse cookie
Parses an HTTP Cookie header string, returning an object of all cookie name-value pairs.
JavaScript, Browser · Oct 22, 2020
Pull values from array based on function
Mutates the original array to filter out the values specified, based on a given iterator function.
JavaScript, Array · Oct 22, 2020
Query string to object
Generates an object from the given query string or URL.
JavaScript, Object · Nov 3, 2020
Rename object keys
Replaces the names of multiple object keys with the values provided.
JavaScript, Object · Oct 22, 2020
Common regular expressions
A collection of regular expressions that can be used to solve common problems.
JavaScript, String · Nov 9, 2022
Introduction to arrow functions in JavaScript
JavaScript arrow functions are a very useful tool to learn and master. Here's a complete introduction to everything you need to know.
JavaScript, Function · Jun 12, 2021
Where and how can I use the Boolean function in JavaScript?
JavaScript's built-in Boolean function can be very useful for truth-checking data among other things. Learn how to use it and level up your code today.
JavaScript, Function · Jun 12, 2021
Compact object
Deeply removes all falsy values from an object or array.
JavaScript, Object · Nov 27, 2020
Heap sort
Sorts an array of numbers, using the heapsort algorithm.
JavaScript, Algorithm · Dec 28, 2020
Array permutations
Generates all permutations of an array's elements (contains duplicates).
JavaScript, Array · Dec 28, 2020
Ungroup array elements
Creates an array of arrays, ungrouping the elements in an array produced by zip.
JavaScript, Array · Oct 22, 2020
Tip: Refactoring your for...in loops to avoid ESLint warnings
ESLint is a very powerful tool that can save you a lot of headaches, but sometimes it gets in the way. Learn how to refactor code to get rid of a common warning.
JavaScript, Array · Jun 12, 2021
A cautionary tale about JavaScript callbacks
JavaScript callbacks are especially tricky when you're not careful. Take a deeper dive into potential issues and how to avoid them.
JavaScript, Function · Jul 1, 2021
Understanding event bubbling, capturing and delegation in JavaScript
Understand how events work in JavaScript and learn when to use event bubbling, event capturing and event delegation with this short guide.
JavaScript, Browser · Jun 12, 2021
What is the difference between JavaScript's for...in, for...of and forEach?
Learn the differences between the three most commonly used iteration methods offered by JavaScript, which often confuse beginners and veterans alike.
JavaScript, Array · Jun 12, 2021
