RegExp.prototype.global - JavaScript 编辑

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

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.

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.global
Writable	no
Enumerable	no
Configurable	yes

Description

The value of global is a Boolean and true if the "g" flag was used; otherwise, false. The "g" flag indicates that the regular expression should be tested against all possible matches in a string. A regular expression defined as both global ("g") and sticky ("y") will ignore the global flag and perform sticky matches.

You cannot change this property directly.

Examples

Using global

var regex = new RegExp('foo', 'g');

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

var str = 'fooexamplefoo';

var str1 = str.replace(regex, '');

console.log(str1);  // Output: example

var regex1 = new RegExp('foo');

var str2 = str.replace(regex1, '');

console.log(str2);  // Output: examplefoo

Specifications

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

Browser compatibility

BCD tables only load in the browser

See also

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