CODEWITHSUNDEEP
javascriptunicode
Amit
Amit

Reputation: 6294

Javascript charCodeAt and fromCharCode not returning the same value

I have a Unicode character that works with a very specific font.

I need to take that character's code, add 8, and convert it back to a string.

Here's python code that works:

char = "񂇁"
char == chr(ord(char)) # True

However, in Javascript, using the matching functions, it does not convert back correctly:

const char = "񂇁";
char == String.fromCharCode("񂇁".charCodeAt(0)) // false

Upvotes: 2

Views: 205

Answers (1)

vsemozhebuty
vsemozhebuty

Reputation: 13772

When you use characters from Unicode astral planes, this is what you need:

const char = "񂇁";
console.log(char === String.fromCodePoint("񂇁".codePointAt(0)));

See also:

The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!)

What every JavaScript developer should know about Unicode

JavaScript has a Unicode problem

Unicode-aware regular expressions in ES2015

ES6 Strings (and Unicode, ❤) in Depth

JavaScript for impatient programmers. Unicode – a brief introduction

Upvotes: 2

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