How to convert character to/from keycode in javascript?
- Admin
- Sep 20, 2023
- Javascript
This tutorial shows 2 ways to convert keycode to/from the character in javascript.
One way to charCodeAt() function converts a character to a keycode character, and the Other fromCharCode() function converts the Unicode keycode to the character.
Key codes for letters are unique numbers for any character including Unicode characters.
Keycodes and characters are
97-122 for a-z characters 65-90 for A-Z characters. 48-57 for 0-9
You can check my other post on Javascript check substring exists in a String
How to Convert character to keycode in javascript
The charCodeAt() method returns the keycode for a character.
It returns numbers
97-122 for a-z characters 65-90 for A-Z characters. 48-57 for 0-9
console.log("a".charCodeAt(0)); // 97
console.log("z".charCodeAt(0)); // 122
console.log("A".charCodeAt(0)); // 65
console.log("Z".charCodeAt(0)); //90How to get characters for a given keycode in javascript?
String.fromCharCode() takes one or many keycodes and returns characters.
Syntax:
String.fromCharCode(arg1,arg2...)Arguments are one or more keycode characters. Returns Character
Here is an example
console.log(String.fromCharCode(97)); //a
console.log(String.fromCharCode(122)); //z
console.log(String.fromCharCode(65, 90)); //AZConclusion
In a summary, Learned ways to convert characters to/from keycodes in javascript with examples.
