RegExp.prototype.toString() - JavaScript 编辑

概述

toString() 返回一个表示该正则表达式的字符串。

语法

regexObj.toString()

参数

无

描述

RegExp 对象覆盖了 Object 对象的 toString() 方法，并没有继承 Object.prototype.toString()。对于 RegExp 对象，toString 方法返回一个该正则表达式的字符串形式。

示例

例子：使用 toString

下例输出 RegExp 对象的字符串值：

myExp = new RegExp("a+b+c");
alert(myExp.toString());       // 显示 "/a+b+c/"

foo = new RegExp("bar", "g");
alert(foo.toString());         // 显示 "/bar/g"

规范

Specification	Status	Comment
ECMAScript 3rd Edition. Implemented in JavaScript 1.1	Standard	Initial definition.
ECMAScript 5.1 (ECMA-262) RegExp.prototype.toString	Standard
ECMAScript 2015 (6th Edition, ECMA-262) RegExp.prototype.toString	Standard

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

• Object.prototype.toString()