Skip to content

The String normalize() method

Find out all about the JavaScript normalize() method of a string

Unicode has four main normalization forms. Their codes are NFC, NFD, NFKC, NFKD. Wikipedia has a good explanation of the topic.

The normalize() method returns the string normalized according to the form you specify, which you pass as parameter (NFC being the default if the parameter is not set).

I will reuse the MDN example because I’m sure there is a valid usage but I can’t find another example:

'\u1E9B\u0323'.normalize() //ẛ̣
'\u1E9B\u0323'.normalize('NFD') //ẛ̣
'\u1E9B\u0323'.normalize('NFKD') //ṩ
'\u1E9B\u0323'.normalize('NFKC') //ṩ

→ Get my JavaScript Beginner's Handbook

I wrote 20 books to help you become a better developer:

  • JavaScript Handbook
  • TypeScript Handbook
  • CSS Handbook
  • Node.js Handbook
  • Astro Handbook
  • HTML Handbook
  • Next.js Pages Router Handbook
  • Alpine.js Handbook
  • HTMX Handbook
  • React Handbook
  • SQL Handbook
  • Git Cheat Sheet
  • Laravel Handbook
  • Express Handbook
  • Swift Handbook
  • Go Handbook
  • PHP Handbook
  • Python Handbook
  • Linux/Mac CLI Commands Handbook
  • C Handbook
...download them all now!

Related posts about js: