hace 4 años · 49775f05a2
--- a/09/index.html
+++ b/09/index.html
@@ -0,0 +1,30 @@
 
				+<!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>
			
 
				+        //1.默认值c
			
 
				+        function add(a, b, c = 5){
			
 
				+            return a+b+c;
			
 
				+        }
			
 
				+        console.log(add(1,2,3))
			
 
				+
			
 
				+        //2.与解构赋值结合
			
 
				+        // host默认值
			
 
				+        function connect({host='127.0.0.1',username,password,port}){
			
 
				+            console.log(host)
			
 
				+        }
			
 
				+        connect({
			
 
				+            //host:'localhost',
			
 
				+            username:'root',
			
 
				+            password:'root',
			
 
				+            port:3306
			
 
				+        })
			
 
				+    </script>
			
 
				+</body>
			
 
				+</html>
			
--- a/10/index.html
+++ b/10/index.html
@@ -0,0 +1,24 @@
 
				+<!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>rest</title>
			
 
				+</head>
			
 
				+<body>
			
 
				+    <script>
			
 
				+        //es5获取方式
			
 
				+        function date(){
			
 
				+            console.log(arguments)  //对象，并非数组
			
 
				+        }
			
 
				+        date(1,2,3,4);
			
 
				+        //es6获取方式：rest参数放置最后,否则报错
			
 
				+        function date1(a,b,...args){
			
 
				+            console.log(args)   //数组
			
 
				+        }
			
 
				+        date1(1,2,3,4)
			
 
				+
			
 
				+    </script>
			
 
				+</body>
			
 
				+</html>
			
--- a/11/index.html
+++ b/11/index.html
@@ -0,0 +1,23 @@
 
				+<!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>rest</title>
			
 
				+</head>
			
 
				+<body>
			
 
				+    <script>
			
 
				+        /**
			
 
				+         * ... 将数组转换逗号分隔
			
 
				+         */
			
 
				+        const aa = [1,2,3,4]
			
 
				+        function chun(){
			
 
				+            console.log(arguments)
			
 
				+        }
			
 
				+        chun(aa)  //只有一个元素，是数组
			
 
				+        chun(...aa)  //数组内部所有元素
			
 
				+
			
 
				+    </script>
			
 
				+</body>
			
 
				+</html>
			
--- a/12/index.html
+++ b/12/index.html
@@ -0,0 +1,35 @@
 
				+<!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>rest</title>
			
 
				+</head>
			
 
				+<body>
			
 
				+    <div></div>
			
 
				+    <div></div>
			
 
				+    <script>
			
 
				+        /**
			
 
				+         * 扩展运算应用
			
 
				+         */
			
 
				+        //1 数组合并
			
 
				+        const aa = [1,2,3]
			
 
				+        const bb = [3,4,5]
			
 
				+        const cc = [...aa,...bb]
			
 
				+        console.log(cc)  //1,2,3,3,4,5
			
 
				+
			
 
				+        //2 数组克隆 -- 注意仅支持浅拷贝
			
 
				+        const dd = [6,7,8,9]
			
 
				+        const ee = [...dd]
			
 
				+        console.log(ee) // [6,7,8,9]
			
 
				+
			
 
				+        //3 将伪数组转换正数组
			
 
				+        const divs = document.querySelectorAll('div')
			
 
				+        console.log(divs)
			
 
				+        const divArr = [...divs]
			
 
				+        console.log(divArr)
			
 
				+        //arguments也是伪数组，可以转换
			
 
				+    </script>
			
 
				+</body>
			
 
				+</html>
			
--- a/13/index.html
+++ b/13/index.html
@@ -0,0 +1,83 @@
 
				+<!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>rest</title>
			
 
				+</head>
			
 
				+<body>
			
 
				+    <script>
			
 
				+        /**
			
 
				+         * 值唯一
			
 
				+         * 不能运算
			
 
				+         * 不能使用for in，可以使用reflect.ownkeys
			
 
				+         */
			
 
				+
			
 
				+         //创建symbol
			
 
				+         let s = Symbol()
			
 
				+         console.log(s,typeof s)  //Symbol() "symbol"
			
 
				+
			
 
				+         let s1 = Symbol('chuck')  //描述字符串
			
 
				+         let s2 = Symbol('chuck')  //描述字符串
			
 
				+         console.log(s1)   //Symbol(chuck)
			
 
				+         console.log(s1 === s2)  //false
			
 
				+
			
 
				+         let s3 = Symbol.for('chuck')  //函数对象
			
 
				+         let s4 = Symbol.for('chuck')
			
 
				+         console.log(s3,typeof s3)  //Symbol(chuck) "symbol"
			
 
				+         console.log(s3 === s4) // true
			
 
				+
			
 
				+         //不能运算 否则报错
			
 
				+         //let result = s + 100;
			
 
				+
			
 
				+         //数据类型
			
 
				+         //USONB   you are so niubility
			
 
				+         /**
			
 
				+          * undefined
			
 
				+          * string
			
 
				+          * object
			
 
				+          * null 
			
 
				+          * symbol
			
 
				+          */
			
 
				+        
			
 
				+        //symbol 使用场景
			
 
				+        //给对象添加方法 up down -- 可以很安全的加入方法
			
 
				+        let game = { }
			
 
				+        let methods = {
			
 
				+            up: Symbol(),
			
 
				+            down: Symbol()
			
 
				+        }
			
 
				+        game[methods.up] = function(){}
			
 
				+        game[methods.down] = function(){}
			
 
				+
			
 
				+        //2
			
 
				+        let cc = {
			
 
				+            name : 'chuck',
			
 
				+            [Symbol('say')]:function(){}
			
 
				+        }
			
 
				+
			
 
				+        // symbol 内置属性 共11个
			
 
				+        /**
			
 
				+         * hasInstance
			
 
				+         * match
			
 
				+         * replace
			
 
				+         * isConcatSpreadable 
			
 
				+         */
			
 
				+        class Person{
			
 
				+            //自动执行
			
 
				+            static [Symbol.hasInstance](param){
			
 
				+                console.log(param)  //{d:2}
			
 
				+                console.log('检测')
			
 
				+            }
			
 
				+        }
			
 
				+        let o = {d:2}
			
 
				+        console.log(o instanceof Person)
			
 
				+
			
 
				+        const arr = [1,2,3]
			
 
				+        const arr1 = [4,5,6]
			
 
				+        arr1[Symbol.isConcatSpreadable] = false;//不可展开 合并
			
 
				+        console.log(arr.concat(arr1))
			
 
				+    </script>
			
 
				+</body>
			
 
				+</html>
			
--- a/README.md
+++ b/README.md
@@ -7,6 +7,11 @@
 
				 * 06 es6对象简化写法
			
 
				 * 07 箭头函数
			
 
				 * 08 箭头函数应用场景
			
 
				+* 09 函数参数默认值
			
 
				+* 10 rest参数
			
 
				+* 11 es6扩展运算符 ...
			
 
				+* 12 扩展运算符应用
			
 
				+* 13 symbol 新数组类型--表示第一无二的值
			
 
				 
			
 
				 ## 运行说明
			
 
				     npm i