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RegExp.prototype.global

概述

global 属性表明正则表达式是否使用了 "g" 标志。global 是一个正则表达式实例的只读属性。

RegExp.prototype.global 属性的属性特性:
writable false
enumerable false
configurable false

描述

global 的值是布尔对象,如果使用了 "g" 标志,则返回 true;否则返回 false。 "g" 标志意味着正则表达式应该测试字符串中所有可能的匹配。

你无法直接更改此属性。

示例

例子:使用 global

var regex = new RegExp("foo", "g")

console.log(regex.global) // true

规范

Specification Status Comment
ECMAScript 3rd Edition. Implemented in JavaScript 1.2. Standard Initial definition.
JavaScript 1.5: global is a property of a RegExp instance, not the RegExp object.
ECMAScript 5.1 (ECMA-262)
RegExp.prototype.global
Standard  
ECMAScript 6 (ECMA-262)
RegExp.prototype.global
Release Candidate global is now a prototype accessor property rather than an instance's own data property.

浏览器兼容性

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Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

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