The flags accessor property of RegExp instances returns the flags of this regular expression.
RegExp.prototype.flags
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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
js
/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.flagsincore-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