Эхлэл Бүгдийг харах Тусламж
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Эх сурвалжийг харах

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zsydgithub 1 жил өмнө
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57b6d4fc6c
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4 өөрчлөгдсөн 195 нэмэгдсэн , 0 устгасан
Өөрчлөлтийг ялгаж харах Өөрчлөлтийн статистик харах
  1. 21 0
      es6/15_symbol.html
  2. 37 0
      es6/16_set.html
  3. 39 0
      es6/17_map.html
  4. 98 0
      es6/18_Promise.html

+ 21 - 0
es6/15_symbol.html
Файл харах 

@@ -0,0 +1,21 @@
 
+<!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>
 
+  <script>
 
+    /* 基本数据类型 number string boolean null undefined */
 
+    /* 独一无二的 不和其他的进行冲突 */
 
+    
+    // var a = Symbol('me')
 
+    let a = Symbol('school')
 
+    let b = Symbol('school')
 
+    console.log(a,b)
 
+    
+  </script>
 
+</body>
 
+</html>

+ 37 - 0
es6/16_set.html
Файл харах 

@@ -0,0 +1,37 @@
 
+<!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>
 
+  <script>
 
+    var arr = [1,2,3,4,5,6,1,2,3,2,3,4,6]
 
+
 
+    var x = new Set(arr)
 
+    var arr2 = Array.from(x)
 
+    console.log(arr2)
 
+
 
+
 
+    function quchong(arr){
 
+      return Array.from(new Set(arr))
 
+    }
 
+    console.log(quchong([1,2,3,23,2,4,5,7,3,5,7]))
 
+    
+    var s1 = new Set([1,2,3,4])
 
+    console.log(s1)
 
+    s1.add(1)
 
+    console.log(s1)
 
+    s1.delete(1)
 
+    console.log(s1)
 
+
 
+
 
+
 
+    console.log(quchong['1','1','1'])
 
+
 
+
 
+  </script>
 
+</body>
 
+</html>

+ 39 - 0
es6/17_map.html
Файл харах 

@@ -0,0 +1,39 @@
 
+<!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>
 
+  <script>
 
+    /* map 数据结构 存放键值对 */
 
+    var obj = {
 
+      name: 'zs'
 
+    }
 
+    var a1 = new Map()
 
+    a1.set('age',20)
 
+    a1.set(obj,'aaa')
 
+    a1.set('name','lisi')
 
+    console.log(a1)
 
+
 
+
 
+    console.log(a1.get('name'))
 
+    console.log(a1.get(obj))
 
+
 
+
 
+    a1.set('name','Tom')
 
+    // console.log(a1.get('name'))
 
+    console.log(a1.has('name'))
 
+    console.log(a1.has('sex'))
 
+
 
+    console.log(a1.delete('sex'))
 
+    console.log(a1)
 
+
 
+    
+    a1.clear()
 
+    console.log(a1)
 
+  </script>
 
+</body>
 
+</html>

+ 98 - 0
es6/18_Promise.html
Файл харах 

@@ -0,0 +1,98 @@
 
+<!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>
 
+  <script>
 
+    // console.log(4)
 
+    // setTimeout(()=>{
 
+    //   console.log(1)
 
+    //   setTimeout(()=>{
 
+    //     console.log(2)
 
+    //   },100)
 
+    //   setTimeout(()=>{
 
+    //     console.log(3)
 
+    //   },10)
 
+    // },0)
 
+    // console.log(5)
 
+
 
+    // let p1 = new Promise ((resolve,reject)=>{
 
+    //   reject()
 
+    //   resolve()
 
+    // }).then(()=>{
 
+    //   console.log('我成功了')
 
+    // }).catch(()=>{
 
+    //   console.log('我失败了')
 
+    // })
 
+    /* 
+      promise 有三种状态
 
+        pending 进行中
 
+        fullfiled 已经成功
 
+        rejected  已经失败
 
+      pending ->  fullfiled  or  pending -> rejected 
+      不可逆的  
+      1.当一个promise 被创建的时，初始状态为pending
 
+      2.当异步操作执行成功的时候，promise状态变为fullfiled 并且执行
 
+      then方法中回调函数
 
+      3.当异步操作执行失败的时候，promise状态变为rejected 并且执行
 
+      catch方法中的回调函数
 
+    */
 
+    let p1 = new Promise((resolve, reject) => {
 
+      setTimeout(()=>{
 
+        console.log(1)
 
+        reject()
 
+      },1000)
 
+      console.log(2)
 
+      resolve()
 
+
 
+    })
 
+    let p2 = new Promise ((resolve,reject)=>{
 
+      setTimeout(()=>{
 
+        console.log(3)
 
+        reject()
 
+      },800)
 
+      reject()
 
+    })
 
+    let p3 = new Promise ((resolve,reject)=>{
 
+      setTimeout(()=>{
 
+        console.log(4)
 
+        resolve()
 
+      },2000)
 
+      console.log(5)
 
+      reject()
 
+    })
 
+  
+    /* promise.all()将多个promise实例封装成一个promise实例 */
 
+    Promise.all([p1,p2,p3]).then(()=>{
 
+      console.log('ok')
 
+    }).catch(()=>{
 
+      console.log('error')
 
+    })
 
+/* 
+    Promise.race([p1,p2,p3]).then(()=>{
 
+      console.log('ok')
 
+    }).catch(()=>{
 
+      console.log('error')
 
+    }) */
 
+
 
+
 
+    // new Promise((resolve,reject)=>{
 
+    //   setTimeout(()=>{
 
+    //     console.log(1)
 
+    //     resolve()
 
+    //   },10)
 
+    // }).then(()=>{
 
+    //   console.log('ok')
 
+    // }).catch(()=>{
 
+    //   console.log('error')
 
+    // })
 
+  </script>
 
+</body>
 
+
 
+</html>