The ignoreCase
property indicates whether or not the "i
" flag is used with the regular expression. ignoreCase
is a read-only property of an individual regular expression instance.
RegExp.prototype.ignoreCase
Try it
Property attributes of RegExp.prototype.ignoreCase |
|
---|---|
Writable | no |
Enumerable | no |
Configurable | yes |
Description
The value of ignoreCase
is a Boolean
and true
if the "i
" flag was used; otherwise, false
. The "i
" flag indicates that case should be ignored while attempting a match in a string.
You cannot change this property directly.
Examples
Using ignoreCase
var regex = new RegExp('foo', 'i'); console.log(regex.ignoreCase); // true
Specifications
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
ignoreCase |
1
|
12
|
1
|
5.5
|
5
|
1
|
1
|
18
|
4
|
10.1
|
1
|
1.0
|
1.0
|
0.10.0
|
prototype_accessor |
48
|
12
|
38
|
5.5
|
35
|
1.3
|
48
|
48
|
38
|
35
|
1
|
5.0
|
1.0
|
6.0.0
|
See also
© 2005–2022 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/ignoreCase