first commit

2024-09-27 02:06:13 +08:00
commit 852d94fbb9
36760 changed files with 3274413 additions and 0 deletions
--- a/历届学生/韩想/每日课程/2020-08-09/index.html
+++ b/历届学生/韩想/每日课程/2020-08-09/index.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+
+</head>
+<body>
+    
+</body>
+
+
+<script>
+
+  var UserName = "张三"
+
+  const UserNames = "李四"
+
+
+
+  // 数据类型
+  // number，string，array，object， null，undefined，function， boolean
+
+
+//   var a = 1;
+//   var b = '2';  // "2"
+
+//   console.log(b-a);  // 
+  
+  // + 两边都是number 加法
+  // + 只要有一个是string，拼接字符串
+  
+  // - 没有特殊情况
+
+  // array 数组
+//   let aa = new Array();
+//   aa[0] = "1"
+//   aa[1] = "2"
+//   aa[2] = "3"
+//   console.log(aa);
+
+// var aa = new Array(1,2,"dewdew");
+// console.log(aa);
+// var aa = [1,2,3]
+// aa.unshift(4)
+// console.log(aa);
+
+// var obj = new Object();
+// var obj = new Object({ name: '李兵', age: 1 });
+
+var obj = { 
+    name: '李兵',
+    age: 1,
+    like: ['骑车','编程'],
+    hello: function() {
+        console.log("hello")
+    }
+}
+
+// let a = Object.keys(obj)
+// console.log(a);
+// for(var i=0;i< a.length;i++) {
+//     console.log(obj[a[i]]);
+// }
+
+// for (var key in obj) {
+//     console.log(obj[key])
+// }
+
+var a = ['好','22','我的娃'];
+// a.forEach(function(val,index,arr){
+//     //console.log(val);
+// })
+
+let b = ['3ds','3dsadc']
+
+// for (var index = 0; index < b.length; index++) {
+//     a.push(b[index])
+// }
+
+// a.concat(b)
+
+// console.log(a);
+
+// 扩展运算符
+// console.log( [ ...a, ...b  ] );
+
+
+
+// obj.hasOwnProperty("love") // true  false
+// let text = "name"
+// obj.hello()
+// console.log(obj.text);
+// console.log(obj[text]);
+
+
+// var a = 1, b = 2;
+
+// console.log(++a); // 2
+// console.log(b--); // 2
+// console.log(b);   // 1
+// console.log(  ++(a--) - ( (a++) - (--b)  ) ); // 
+</script>
+
+</html>