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RegExp.prototype.multiline

The multiline property indicates whether or not the "m" flag is used with the regular expression. multiline is a read-only property of an individual regular expression instance.

Property attributes of RegExp.prototype.multiline
Writable no
Enumerable no
Configurable yes

Description

The value of multiline is a Boolean and is true if the "m" flag was used; otherwise, false. The "m" flag indicates that a multiline input string should be treated as multiple lines. For example, if "m" is used, "^" and "$" change from matching at only the start or end of the entire string to the start or end of any line within the string.

You cannot change this property directly.

Examples

Using multiline

var regex = new RegExp('foo', 'm');

console.log(regex.multiline); // 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
multiline
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

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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/multiline