How can I convert a string into a unicode character?

Question

In Javascript '\uXXXX' returns in a unicode character. But how can I get a unicode character when the XXXX part is a variable?

For example:

var input = '2122'; console.log('\\u' + input);             // returns a string: "\u2122" console.log(new String('\\u' + input)); // returns a string: "\u2122" 

The only way I can think of to make it work, is to use eval; yet I hope there's a better solution:

var input = '2122'; var char = '\\u' + input; console.log(eval("'" + char + "'"));    // returns a character: "™" 

Answer 1

Use String.fromCharCode() like this: String.fromCharCode(parseInt(input,16)). When you put a Unicode value in a string using \u, it is interpreted as a hexdecimal value, so you need to specify the base (16) when using parseInt.

Answer 2

String.fromCharCode("0x" + input)

or

String.fromCharCode(parseInt(input, 16)) as they are 16bit numbers (UTF-16)