Insert Unicode character into JavaScript

Question

I need to insert an Omega (Ω) onto my html page. I am using its HTML escaped code to do that, so I can write Ω and get Ω. That\'s all fine an

Answer 1

One option is to put the character literally in your script, e.g.:

const omega = 'Ω';

This requires that you let the browser know the correct source encoding, see Unicode in JavaScript

However, if you can't or don't want to do this (e.g. because the character is too exotic and can't be expected to be available in the code editor font), the safest option may be to use new-style string escape or String.fromCodePoint:

const omega = '\u{3a9}';

// or:

const omega = String.fromCodePoint(0x3a9);

This is not restricted to UTF-16 but works for all unicode code points. In comparison, the other approaches mentioned here have the following downsides:

• HTML escapes (const omega = 'Ω';): only work when rendered unescaped in an HTML element
• old style string escapes (const omega = '\u03A9';): restricted to UTF-16
• String.fromCharCode: restricted to UTF-16