Microsoft TypeScript

table of Contents:

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Section 1 chat TypeScript

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After compilation, generate js file

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Section 2 basic types

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3. list array

4. Tuple tuple

5. Enumeration

// 扩展类型 enum 枚举
enum color {Red, Green, Blue};
var c:color = color.Red;
console.log(color.Red);  // 0
console.log(c);  // 0

6. arbitrary value

7. null

void does not allow return return

8. Type assertion

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Section 3 Interface

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1. Interface and references

2. interfaces and classes (interfaces, there are what, what class it should be)

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The first four categories

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1. Use of class constructor

class 幸福的家庭{}  // 新建类
class 儿子 extends 幸福的家庭 {} // 新建类 儿子，继承 类幸福的家庭
class 幸福的家庭{
    父亲 : string，
    儿子打招呼（age: number){ // 方法
        console.log(`我的父亲是${this.父亲}，我今年${age}岁`);
    },
    constructor(fatherName : string) {  // 构造函数
        this.父亲 = fatherName;
    }
}

Access control modifiers

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The first five functions

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1. Have the name of the function

2. anonymous function

Use 1:

Use Method 2:

function dianming(banzhang:string, ...tongxue:string[]) {
    console.log('班长：' + banzhang +'，同学：' + tongxue.join("、"));
}
let student = dianming('wos','张三', '李四', '王五');
// 班长：wos，同学：张三、李四、王五

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Section 6 Generics

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1. Introduction Generics

2. Example 1

3. Example 2

4. Example 3

interface ss<t>{
    (arg:t):t
}
function whatis<t>(chr:t):t {
    return chr;
}
let num:ss<number> = whatis  // num 赋予 ss 接口；运算通过 function 执行
console.log(num(10));  // 10

5. Application of the generic class