regExp.ignoreCase
regExp.ignoreCase
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 | no |
| Enumerable | no |
| Configurable | yes |
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
使用ignoreCase
var regex = new RegExp('foo', 'i'
console.log(regex.ignoreCase // true
规范
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 3rd Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.2. JavaScript 1.5: ignoreCase is a property of a RegExp instance, not the RegExp object. |
| ECMAScript 5.1 (ECMA-262)The definition of 'RegExp.prototype.ignoreCase' in that specification. | Standard | |
| ECMAScript 2015 (6th Edition, ECMA-262)The definition of 'RegExp.prototype.ignoreCase' in that specification. | Standard | ignoreCase is now a prototype accessor property rather than an instance's own data property. |
| ECMAScript Latest Draft (ECMA-262)The definition of 'RegExp.prototype.ignoreCase' 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 | ? | ? | 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) | ? | ? | ? |
