How to use yield of javascript
In this article, the editor introduces in detail "how to use javascript's yield". The content is detailed, the steps are clear, and the details are handled properly. I hope this article "how to use javascript's yield" can help you solve your doubts.
Javascript yiel Code:
Function delay (time) {
Return new Promise (function (resolve, reject) {
SetTimeout () = > {
Resolve ()
}, time)
});
}
Function* output () {
Yield delay (500) .then (() = > console.log (1))
Yield (function () {console.log (2); return 'aa'}) ()
Yield delay 200.then (() = > console.log (3))
Yield (function () {console.log (4); return 'aa'}) ()
}
Function runGen (gen, next) {
Const item = gen.next ()
If (item.done) return
Const {value} = item
If (value instanceof Promise) {
Value.then (() = > runGen (gen))
} else {
RunGen (gen)
}
}
RunGen (output ())
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