Introduction

This article will describe converting text from one case to another using JavaScript. In general programming, we need to convert text to the following cases:
  • Lower Case
  • Upper Case
  • Title Case
We will see the conversion one by one below.
To convert a text into lowercase using JavaScript:
  1. function toLowerCase(str) {
  2. return str.toLowerCase();
  3. }
You can use this as in the following:
  1. alert(toLowerCase("HELLO WORLD"));
To convert text into uppercase using JavaScript:
  1. function toUpperCase(str) {
  2. return str.toUpperCase();
  3. }
You can use this as in the following:
  1. alert(toUpperCase("hello world"));
To convert text into Titlecase using JavaScript:
  1. function toTitleCase(str) {
  2. return str.replace(/\w\S*/g,
  3. function (txt) {
  4. return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
  5. });
  6. }
You can use this by calling:
  1. alert(toTitleCase("hello world"));

Summary

Hope you all enjoyed reading this article. Let me know your thoughts and views via comments.