RegExp.prototype.unicode - JavaScript 编辑

The unicode property indicates whether or not the "u" flag is used with a regular expression. unicode is a read-only property of an individual regular expression instance.

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The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Property attributes of RegExp.prototype.unicode
Writable	no
Enumerable	no
Configurable	yes

Description

The value of unicode is a Boolean and true if the "u" flag was used; otherwise false. The "u" flag enables various Unicode-related features. With the "u" flag, any Unicode code point escapes will be interpreted as such, for example.

You cannot change this property directly. It is read-only.

Examples

Using the unicode property

var regex = new RegExp('\u{61}', 'u');

console.log(regex.unicode); // true

Specifications

Specification
ECMAScript (ECMA-262) The definition of 'RegExp.prototype.unicode' in that specification.

Browser compatibility

BCD tables only load in the browser

See also

• RegExp.lastIndex
• RegExp.prototype.global
• RegExp.prototype.ignoreCase
• RegExp.prototype.multiline
• RegExp.prototype.source
• RegExp.prototype.sticky