JavaScript: RegExp Unicode Property

New in JS2018

Each unicode character has many properties. For exmaple, if it is: capital letter, Latin letter, punctuation, math symbol ( ± ∑ ∫ ), emoji, Chinese character, etc.

JavaScript regex allows you to match unicode properties.

Syntax:

\p{PropertyValue}

match a char that has property PropertyValue

\p{PropertyName=PropertyValue}

match a char whose PropertyName is PropertyValue

\p{BinaryPropertyName}

\P{...}

(Note, uppercase P) Negation of \p{...}.

Get emoji:

console.log(
"i ♥ 😸. $_$".match(/\p{Emoji_Presentation}/gu)
);
// [ '😸' ]

Get Latin characters:

console.log(
"i ♥ 😸. $_$".match( /\p{Script_Extensions=Latin}+/gu )
);
// [ 'i' ]

Get letters:

// get letters
console.log(
"∑Σπα".match( /\p{L}/gu )
);
// [ 'Σ', 'π', 'α' ]

Get punctuations:

// punctuations
console.log(
"i ♥ 😸. $_$".match( /\p{P}/gu )
);
// [ '.', '_' ]

Get currency symbols:

// currency symbols
console.log(
"i ♥ 😸. $_$".match( /\p{Sc}/gu )
);
// [ '$', '$' ]

See also:

• JavaScript: Regex Functions
• JavaScript: Unicode Escape Sequence