How to compose emoji unicode dynamically from "1f628" to "\u{1f628}" with javascript

Question

I'm trying to convert a unified string of emoji.

Getting error when trying to do this:

var code = '1f628'
`\u{${code}}`

SyntaxError: Invalid Unicode escape sequence

How can I make it work?

Answer 1

String.fromCodePoint will get you the character from its numeric code point, and parseInt will get you the number from a hex string:

var code = '1f628';
String.fromCodePoint(parseInt(code, 16)); // 😨