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TS-General - Coggle Diagram

- - - - Built-in types
        
        Number, String, Boolean, Void, Null, Undefine
      - User-defined types
        
        (enums), classes, interfaces, arrays, and tuple.
  - - - var name:string = ”mary”
      - var name:string;
      - var name;
      - var name = ”mary”
    - - var str = '1'
        var str2:number = <number> <any> str
    - - TypeScript encourages declaring a variable without a type. In such cases, the compiler will determine the type of the variable on the basis of the value assigned to it.
    - - Global Scope
      - Local Scope
      - Class Scope
  - - - function disp_details(id:number,name:string,mail_id?:string) { }
    - - function addNumbers(...nums:number[]) {}
    - - function calculate_discount(price:number,rate:number = 0.50) { }
    - - var res = function( [arguments] ) { ... }
    - - var res = new Function( [arguments] ) { ... }.
  - - - var array_name[:datatype]; //declaration
      - array_name = [val1,val2,valn..] //initialization