The flags
accessor property of RegExp
instances returns the flags of this regular expression.
RegExp.prototype.flags
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Try it
Description
RegExp.prototype.flags
has a string as its value. Flags in the flags
property are sorted alphabetically (from left to right, e.g. "dgimsuvy"
). It actually invokes the other flag accessors (hasIndices
, global
, etc.) one-by-one and concatenates the results.
All built-in functions read the flags
property instead of reading individual flag accessors.
The set accessor of flags
is undefined
. You cannot change this property directly.
Examples
Using flags
/foo/ig.flags; // "gi" /bar/myu.flags; // "muy"
Specifications
Browser compatibility
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | Deno | Node.js | |
flags |
49 | 79 | 37 | 39 | 9 | 49 | 37 | 41 | 9 | 5.0 | 49 | 1.0 | 6.0.0 |
See also
- Polyfill of
RegExp.prototype.flags
incore-js
- Advanced searching with flags in the Regular expressions guide
RegExp.prototype.source
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/flags