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CSSStyleDeclaration JS Conversion


RegExp \p Metacharacter

Match Latin Script:

let text1 = "A";
let text2 = "Ж";

let pattern = /\p{Script=Latin}/u;
Try it Yourself »

Match a Unicode character property:

let text = "😄";

let pattern = /\p{Emoji}/v;
let result = pattern.test(text);
Try it Yourself »

Description

The \p{Unicode property} metacharacter matches characters with a Unicode character property.


Syntax

new RegExp("\\p{Unicode property}","v")

or simply:

/\p{Unicode property}/v

Note

\p and \P are only supported in Unicode-aware mode.

This means that the \u flag or the \v flag must be set.

Unicode Properties

Supported by the /u Flag

Category Abbr Examples
Letter L ABcd
Uppercase_Letter Lu ABCD
Lowercase_Letter Ll abcd
Titlecase_letter Lt Nj (U+01CB)
Modifier_Letter Lm ˆ (U+02C6)
Other_Letter Lo not in Lu/Ll/Lt/Lm
Decimal_Number Nd 1234
Letter_Number Nl Ⅰ Ⅳ Ⅶ
Other_Number No ¼ ½ ¾
Math_Symbol Sm + = ∑
Currency_Symbol Sc $ £ € ¥
Other_Symbol So © ®
Script Sc Sc=Greek

Supported by the /v Flag

Category Examples
Emoji 😀 😁 😂 😃
Emoji_Presentation
Emoji_Modifier 👩🏿 👩🏾 👩🏽 👩🏼
Emoji_Modifier_Base
Emoji_Component 👩‍🦰 👩‍🦱 👩‍🦳 👩‍🦲
Extended_Pictographic Used in modern Emoji sequences

Regular Expression Methods

Regular Expression Search and Replace can be done with different methods.

These are the most common:

String Methods

MethodDescription
match(regex) Returns an Array of results
matchAll(regex) Returns an Iterator of results
replace(regex) Returns a new String
replaceAll(regex) Returns a new String
search(regex) Returns the index of the first match
split(regex) Returns an Array of results

RegExp Methods

MethodDescription
regex.exec() Returns an Iterator of results
regex.test() Returns true or false

Browser Support

/\p{Unicode property}/ is a JavaScript 2018 feature.

ES 2018 is supported in all modern browsers since June 2020:

Chrome 63 Edge 79 Firefox 78 Safari 12 Opera 50
Des 2017 Jan 2020 Jun 2020 Sep 2018 Jan 2018


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