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The flags property returns a string consisting of the flags of the current regular expression object.
Property attributes of RegExp.prototype.flags |
|
|---|---|
| Writable | no |
| Enumerable | no |
| Configurable | yes |
Description
Flags in the flags property are sorted alphabetically (from left to right, e.g. "gimuy").
Examples
Using flags
/foo/ig.flags; // "gi" /bar/myu.flags; // "muy"
Polyfill
if (RegExp.prototype.flags === undefined) {
Object.defineProperty(RegExp.prototype, 'flags', {
configurable: true,
get: function() {
return this.toString().match(/[gimuy]*$/)[0];
}
});
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'RegExp.prototype.flags' in that specification. |
Standard | Initial definition. |
| ECMAScript 2017 Draft (ECMA-262) The definition of 'RegExp.prototype.flags' in that specification. |
Draft |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | No support | 37 (37) | No support | No support | No support |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | No support | No support | 37.0 (37) | No support | No support | No support |