RegExp.prototype.dotAll
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.
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
Specification |
---|
ECMAScript Language Specification # sec-get-regexp.prototype.dotAll |
Browser compatibility
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