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RegExp.prototype.ignoreCase

概述

ignoreCase 属性表明正则表达式是否使用了 "i" 标志。ignoreCase 是正则表达式实例的只读属性。

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

描述

ignoreCase 的值是布尔对象,如果使用了"i" 标志,则返回 true;否则,返回 false。"i" 标志意味着在字符串进行匹配时,应该忽略大小写。

你无法直接更改此属性。

示例

例子:使用 ignoreCase

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

console.log(regex.ignoreCase) // true

规范

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

浏览器兼容性

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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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