Function.prototype.isGenerator()
Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
The isGenerator() method determines whether or not a function is a generator.
Syntax
<var>fun</var>.isGenerator()
Return value
A Boolean indicating whether or not the given function is a generator.
Description
The isGenerator() method determines whether or not the function fun is a generator. It was part of an early Harmony proposal, but has not been included in the ECMAScript 6 specification.
Examples
function f() {} function* g() { yield 42; } console.log('f.isGenerator() = ' + f.isGenerator()); // f.isGenerator() = false console.log('g.isGenerator() = ' + g.isGenerator()); // g.isGenerator() = true
Specifications
Not part of any specification. Implemented in JavaScript 1.8.6.
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | No support | 5.0 (5.0) | 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 | 5.0 (5.0) | No support | No support | No support |
See also
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/javascript/reference/global_objects/function/isgenerator