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:<

Answer 1

JavaScript uses UCS-2 internally.

Thus, String.fromCharCode(codePoint) won’t work for supplementary Unicode characters. If codePoint is 119558 (0x1D306, for the '

Answer 2

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 3

var hex = '2122';
var char = unescape('%u' + hex);

console.log(char);

will returns " ™ "

Answer 4

String.fromCharCode("0x" + input)

or

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

Answer 5

Since ES5 you can use

String.fromCodePoint(number)

to get unicode values bigger than 0xFFFF.

So, in every new browser, you can write it in this way:

var input = '2122';
console.log(String.fromCodePoint(input));

or if it is a hex number:

var input = '2122';
console.log(String.fromCodePoint(parseInt(input, 16)));

More info:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/fromCodePoint