RegExp.prototype.global - JavaScript 编辑

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 2015 (6th Edition, ECMA-262) RegExp.prototype.global	Standard	global is now a prototype accessor property rather than an instance's own data property.

浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

• Desktop
• Mobile

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
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)

相关链接

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