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ts

e 1 an în urmă
părinte
53c62f938d
comite
0689594e36
4 a modificat fișierele cu 118 adăugiri și 4 ștergeri
Vedere unificată Arată Statisticile Diff
  1. 58 0
      ts/2.类型/1.js
  2. 27 4
      ts/2.类型/1.ts
  3. 22 0
      ts/2.类型/2.ts
  4. 11 0
      ts/2.类型/index.html

+ 58 - 0
ts/2.类型/1.js
Vizualizați fișierul 

@@ -0,0 +1,58 @@
 
+/**
 
+ * 1 2 4 67 8 true false => 字面量
 
+ * var 变量名 = 变量值;
 
+ */
 
+// 直接定义字面量
 
+var a;
 
+a = 10;
 
+// a = '10';
 
+// 逻辑运算符 && | ！
 
+// | 
+var b;
 
+b = "man";
 
+b = "woman";
 
+// b = "ccc";
 
+// number string undefined null boolean 
+// let a1  = 1;
 
+// 任意类型 any 隐性类型
 
+// 如果给变量定义类型是any 相当于关闭了ts校验
 
+var c;
 
+c = 1;
 
+c = "1";
 
+// c = true;
 
+// c = null
 
+// unknown 未知类型 显性类型
 
+var d;
 
+d = 1;
 
+d = "1";
 
+d = true;
 
+d = null;
 
+d = 'hello';
 
+var e;
 
+// unknown 与 any 
+// any可以给任意类型进行赋值
 
+// unknown不可以给任意类型进行赋值
 
+e = c;
 
+// e = d;
 
+// if(typeof d === 'string') {
 
+//     e = d;
 
+// }
 
+// 类型断言：告知解析器究竟是什么类型
 
+/**
 
+ * 数据 as 类型
 
+ * <类型>数据
 
+ */
 
+// e = d;
 
+// e = d as string;
 
+e = d;
 
+// void 用来表示空的类型
 
+function fn1() {
 
+    console.log("fn1");
 
+    // return '哈哈';
 
+}
 
+fn1();
 
+// never 
+function fn2() {
 
+    throw new Error("fn2");
 
+}
 
+fn2();

+ 27 - 4
ts/2.类型/1.ts
Vizualizați fișierul 

@@ -18,7 +18,7 @@ b = "woman";
 
 // 任意类型 any 隐性类型
 
 // 任意类型 any 隐性类型
 
 // 如果给变量定义类型是any 相当于关闭了ts校验
 
 // 如果给变量定义类型是any 相当于关闭了ts校验
 
 let c;
 
 let c;
 
-c = 1;
 
+c = 1; 
 c ="1";
 
 c ="1";
 
 // c = true;
 
 // c = true;
 
 // c = null
 
 // c = null
 
@@ -38,6 +38,29 @@ let e:string;
 
 // unknown不可以给任意类型进行赋值
 
 // unknown不可以给任意类型进行赋值
 
 e = c;
 
 e = c;
 
 // e = d;
 
 // e = d;
 
-if(typeof d === 'string') {
 
-    e = d;
 
-}
 
+// if(typeof d === 'string') {
 
+//     e = d;
 
+// }
 
+
 
+// 类型断言：告知解析器究竟是什么类型
 
+/**
 
+ * 数据 as 类型
 
+ * <类型>数据
 
+ */
 
+// e = d;
 
+// e = d as string;
 
+e = <string>d;
 
+
 
+// void 用来表示空的类型
 
+function fn1():void {
 
+    console.log("fn1")
 
+    // return '哈哈';
 
+}
 
+fn1()
 
+
 
+// never 不允许反出结果
 
+function fn2():never {
 
+    // 11;
 
+    throw new Error("fn2")
 
+}
 
+fn2();

+ 22 - 0
ts/2.类型/2.ts
Vizualizați fișierul 

@@ -0,0 +1,22 @@
 
+// object 是js中的一个类型
 
+// 基本数据类型：number string undefined null boolean 
+// 引用数据类型: Object(Array object function)
 
+let a:object;
 
+a = {};
 
+a = [];
 
+a = function() {};
 
+/**
 
+ * 对象语法
 
+ * {属性名:属性值,属性名?:属性值...}
 
+ * 属性名后添加问号 相当于给当前属性设置可选开关
 
+ */
 
+let b:{a:number,b?:string};
 
+b = {a:1,b:'1'};
 
+b = {a:5};
 
+/**
 
+ * [propName:string]:any 可以添加任意属性的任意类型的数据
 
+ */
 
+let c:{a:number,b?:string,[propName:string]:any};
 
+c = {a:10,b:'12',c:14,d:true};
 
+// let b = {a:1,b:1}
 
+export{}

+ 11 - 0
ts/2.类型/index.html
Vizualizați fișierul 

@@ -0,0 +1,11 @@
 
+<!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>
 
+    <script src="./1.js"></script>
 
+</body>
 
+</html>