regExp.global
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 | no |
| Enumerable | no |
| Configurable | yes |
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
使用global
var regex = new RegExp('foo', 'g');
console.log(regex.global); // true规范
Specification | Status | Comment |
|---|---|---|
ECMAScript 3rd Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.2. JavaScript 1.5: global is a property of a RegExp instance, not the RegExp object. |
ECMAScript 5.1 (ECMA-262)The definition of 'RegExp.prototype.global' in that specification. | Standard | ? |
ECMAScript 2015 (6th Edition, ECMA-262)The definition of 'RegExp.prototype.global' in that specification. | Standard | global is now a prototype accessor property rather than an instance's own data property. |
ECMAScript Latest Draft (ECMA-262)The definition of 'RegExp.prototype.global' in that specification. | Draft | ? |
浏览器兼容性
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
Prototype accessor property | (Yes) | ? | 38 (38) | ? | ? | ? |
Feature | Android | Chrome for Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
Prototype accessor property | ? | ? | ? | 38.0 (38) | ? | ? | ? |
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