非标
此特征是非标准的,且不在标准轨道中。不要在面向 Web 的生产站点中使用它:它不适用于每个用户。实现之间可能存在大的不兼容性,且行为将来可能改变。
The non-standard
isGenerator()
method used to determine whether or not a function is a
generator
. It has been removed from Firefox starting with version 58.
fun.isGenerator()
A
布尔
indicating whether or not the given function is a
generator
.
isGenerator()
method determines whether or not the function
fun
是
generator
. It was part of an early Harmony proposal, but has not been included in the ECMAScript 2015 specification.
function f() {}
function* g() {
yield 42;
}
console.log('f.isGenerator() = ' + f.isGenerator()); // f.isGenerator() = false
console.log('g.isGenerator() = ' + g.isGenerator()); // g.isGenerator() = true
Not part of any standard.
Archive
Function
Object
Object.prototype.__defineGetter__()
Object.prototype.__defineSetter__()
Object.prototype.__lookupGetter__()
Object.prototype.__lookupSetter__()
Object.prototype.hasOwnProperty()
Object.prototype.isPrototypeOf()
Object.prototype.propertyIsEnumerable()
Object.prototype.toLocaleString()
Object.prototype.toSource()
Object.prototype.toString()
Object.prototype.unwatch()
Object.prototype.valueOf()
Object.prototype.watch()
Object.setPrototypeOf()