How to convert keycode to character using javascript [duplicate]

Question

How to convert keycode to character using javascript

var key_code = 65; 

result should be

character = "a"; 

Answer 1

String.fromCharCode() is what you want:

The fromCharCode() method converts Unicode values to characters.

Syntax

String.fromCharCode(n1, n2, ..., nX) 

Answer 2

As seen here:

String.fromCharCode((96 <= key && key <= 105) ? key-48 : key)