RegExp.prototype.multiline

Try it

const regex1 = /^football/;
const regex2 = /^football/m;
console.log(regex1.multiline);
// Expected output: false
console.log(regex2.multiline);
// Expected output: true
console.log(regex1.test("rugby\nfootball"));
// Expected output: false
console.log(regex2.test("rugby\nfootball"));
// Expected output: true

Description

RegExp.prototype.multiline has the value 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.

The set accessor of multiline is undefined. You cannot change this property directly.

Examples

Using multiline

const regex = /^foo/m;
console.log(regex.multiline); // true

Specifications

Browser compatibility

See also

• RegExp.prototype.lastIndex
• RegExp.prototype.dotAll
• RegExp.prototype.global
• RegExp.prototype.hasIndices
• RegExp.prototype.ignoreCase
• RegExp.prototype.source
• RegExp.prototype.sticky
• RegExp.prototype.unicode