is-4byte-char

Check if a given value is a character that costs 4 bytes in UTF-8

import is4byteChar from 'is-4byte-char';

is4byteChar('１'); //=> false
is4byteChar('🔶'); //=> true

Installation

npm

npm install is-4byte-char

Bower

bower install is-4byte-char

is4byteChar(val)

val: any types
Return: Boolean

It returns true if the argument is a 4-byte character in UTF-8, otherwise false.

is4byteChar(String.fromCodePoint(0x0080)); //=> false
is4byteChar(String.fromCodePoint(0x0800)); //=> false
is4byteChar(String.fromCodePoint(0x10000)); //=> true

// Non-string value
is4byteChar(123); //=> false

License

Copyright (c) 2016 Shinnosuke Watanabe

Licensed under the MIT License.