The dotAll property indicates whether or not the "s" flag is used with the regular expression. dotAll is a read-only property of an individual regular expression instance.
RegExp.prototype.dotAll
Try it
Property attributes of RegExp.prototype.dotAll |
|
|---|---|
| Writable | no |
| Enumerable | no |
| Configurable | yes |
Description
The value of dotAll is a Boolean and true if the "s" flag was used; otherwise, false. The "s" flag indicates that the dot special character (".") should additionally match the following line terminator ("newline") characters in a string, which it would not match otherwise:
- U+000A LINE FEED (LF) ("
\n") - U+000D CARRIAGE RETURN (CR) ("
\r") - U+2028 LINE SEPARATOR
- U+2029 PARAGRAPH SEPARATOR
This effectively means the dot will match any character on the Unicode Basic Multilingual Plane (BMP). To allow it to match astral characters, the "u" (unicode) flag should be used. Using both flags in conjunction allows the dot to match any Unicode character, without exceptions.
You cannot change this property directly.
Examples
Using dotAll
var str1 = 'bar\nexample foo example'; var regex1 = new RegExp('bar.example','s'); console.log(regex1.dotAll); // Output: true console.log(str1.replace(regex1,'')); // Output: foo example var str2 = 'bar\nexample foo example'; var regex2 = new RegExp('bar.example'); console.log(regex2.dotAll); // Output: false console.log(str2.replace(regex2,'')); // Output: bar // example foo example
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 | |
dotAll |
62
|
79
|
78
|
No
|
49
|
12
|
62
|
62
|
79
|
46
|
12
|
8.0
|
1.0
|
8.10.0
8.3.0
|
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/dotAll
