is-4byte-code-point

Check if a given number is a code point of UTF-8 4-byte character

import is4byteCodePoint from 'is-4byte-code-point';
 
is4byteCodePoint('Ａ'.codePointAt(0)); //=> false
is4byteCodePoint('👍'.codePointAt(0)); //=> true

Installation

npm

npm install is-4byte-code-point

Bower

bower install is-4byte-code-point

is4byteCodePoint(number)

number: Number
Return: Boolean

It returns true if the number is no fewer than 65536 and no greater than 1114111, otherwise false.

is4byteCodePoint(-1); //=> false
is4byteCodePoint(0); //=> false
is4byteCodePoint(100000); //=> true
is4byteCodePoint(1000000); //=> false
is4byteCodePoint(NaN); //=> false
is4byteCodePoint(Infinity); //=> false

License

Copyright (c) 2016 Shinnosuke Watanabe

Licensed under the MIT License.