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task done?

miskson 2 years ago
parent
6fde69cd2b
commit
42e18ff140
2 changed files with 59 additions and 0 deletions
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  1. 13 0
      hw17-generators/index.htm
  2. 46 0
      hw17-generators/script.js

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hw17-generators/index.htm
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+<!DOCTYPE html>
 
+<html lang="en">
 
+<head>
 
+    <meta charset="UTF-8">
 
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
 
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
+    <title>Document</title>
 
+</head>
 
+<body>
 
+    <h1>Generators</h1>
 
+    <script src="./script.js"></script>
 
+</body>
 
+</html>

+ 46 - 0
hw17-generators/script.js
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+const delay = ms => new Promise(ok => setTimeout(() => ok(ms), ms))
 
+
 
+function* likeAsync() {
 
+    console.log(1)
 
+    console.log(yield 1.5)
 
+    let res1 = yield delay(2000)
 
+    console.log(2, res1)
 
+    let res2 = yield delay(2000)
 
+    console.log(3, res2)
 
+    try {
 
+        console.log(yield fetch("htpsdasd://localhost:10000"))
 
+    } catch (e) {
 
+        console.log('GENA ERROR CATCH', e)
 
+    }
 
+    let res3 = yield delay(3000)
 
+    console.log(4, res3)
 
+}
 
+
 
+let likeA = likeAsync()
 
+
 
+console.log(likeA.next())
 
+console.log(likeA.next().value.then(res => console.log(res)))
 
+
 
+function run(gena) {
 
+    let iter = gena()
 
+    function next(res, err) {
 
+        let value, done
 
+        try {
 
+            if(!err) {
 
+                //литеральная деструктуризация???
 
+                [{value, done}] = [iter.next(res)]
 
+            } else {
 
+                [{value, done}] = [iter.throw(err)]
 
+            }
 
+            if (done) return;
 
+            if(value && typeof value?.then === 'function') {
 
+                value.then(next, err => next(undefined, err))
 
+            } else if (value){
 
+                next(value)
 
+            }
 
+        } catch(e) {
 
+            console.warn('gena error', e)
 
+        }
 
+    }
 
+    next()
 
+}