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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

fun.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 2015 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

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