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hw js20

Vika 3 years ago
parent
a56dbaf1f2
commit
0ff67dd11a
3 changed files with 67 additions and 0 deletions
Unified View Show Diff Stats
  1. 13 0
      js20/index.html
  2. 54 0
      js20/main.js
  3. 0 0
      js20/style.css

+ 13 - 0
js20/index.html
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@@ -0,0 +1,13 @@
 
+<!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>
 
+  <link rel="stylesheet" href="style.css">
 
+</head>
 
+<body>
 
+ <script src="main.js"></script> 
+</body>
 
+</html>

+ 54 - 0
js20/main.js
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@@ -0,0 +1,54 @@
 
+const delay = (ms) => new Promise((resolve, reject) => setTimeout(() => resolve('Vika'), 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("http://localhost:10000"));
 
+ }
 
+ catch (e) {
 
+   console.log('generator error catch', e);
 
+ }
 
+ let res3 = yield delay(2000);
 
+  console.log(4, res3);
 
+  
+  let res4 = yield delay(2000);
 
+  console.log(5, res4);
 
+}
 
+
 
+
 
+
 
+function run (gena) {
 
+  let iter = gena();
 
+  function next(result, error) {
 
+  let value;
 
+  let done;
 
+
 
+  if (error) {
 
+    const errGen = iter.throw(error);
 
+    value = errGen.value;
 
+    done =  errGen.done;
 
+    }
 
+  if(!error) { 
+    const resultGen = iter.next(result);
 
+    value = resultGen.value;
 
+    done =  resultGen.done;
 
+  }
 
+  if (done) {return};
 
+   
+  if(value && typeof value?.then === 'function'){
 
+      value.then(next, err => next(undefined, err))
 
+  } else {
 
+      next(value);
 
+    }
 
+  }
 
+  next();
 
+}
 
+
 
+run(likeAsync);
 
+
 
+
 
+

+ 0 - 0
js20/style.css
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