Using Switch Case Statement In AngularJS Application Using JavaScript/ jQuery

Let us see how to use switch-case statements in JavaScript/jQuery with AngularJS implementation and in .NET Applications.

Note

Here, one important point needs to be remembered about switch-case statements in JavaScript/jQuery, which is that this is  also working in a similar way as we use it in C# and .NET applications.

First of all, we will see how it works in .NET applications.

Let us see in detail with the code snippets given below. 

  1. using System;  
  2. using System.Collections.Generic;  
  3. using System.Linq;  
  4. using System.Text;  
  5. using System.Threading.Tasks;  
  6. namespace switchCase {  
  7.     class myInfoTypes {  
  8.         public int typeValue {  
  9.             get;  
  10.             set;  
  11.         }  
  12.         public string typeDesc {  
  13.             get;  
  14.             set;  
  15.         }  
  16.     }  
  17.     class MyApp {  
  18.         static void Main(string[] args) {  
  19.             List < myInfoTypes > lstmyInfoTypes = new List < myInfoTypes > ();  
  20.             lstmyInfoTypes.Add(new myInfoTypes {  
  21.                 typeValue = 0, typeDesc = "MyInf0-0"  
  22.             });  
  23.             lstmyInfoTypes.Add(new myInfoTypes {  
  24.                 typeValue = 1, typeDesc = "MyInf0-1"  
  25.             });  
  26.             lstmyInfoTypes.Add(new myInfoTypes {  
  27.                 typeValue = 2, typeDesc = "MyInf0-2"  
  28.             });  
  29.             lstmyInfoTypes.Add(new myInfoTypes {  
  30.                 typeValue = 3, typeDesc = "MyInf0-3"  
  31.             });  
  32.             int value = lstmyInfoTypes[2].typeValue;  
  33.             switch (value) {  
  34.                 case 0:  
  35.                     Console.WriteLine(lstmyInfoTypes[2].typeDesc);  
  36.                     break;  
  37.                 case 1:  
  38.                     Console.WriteLine(lstmyInfoTypes[2].typeDesc);  
  39.                     break;  
  40.                 case 2:  
  41.                     Console.WriteLine(lstmyInfoTypes[2].typeDesc);  
  42.                     break;  
  43.                 case 3:  
  44.                     Console.WriteLine(lstmyInfoTypes[2].typeDesc);  
  45.                     break;  
  46.             }  
  47.             Console.Read();  
  48.         }  
  49.     }  
  50. }   

Explanation

Output of the above program is given below.

MyInf0-2

Now, let’s see how to use it in JavaScript/jQuery with AngularJS implementation.

Let us see in detail with the code snippets given below.

  1. var myInfoTypes = {  
  2.     "MyInf0-0": 0,  
  3.     "MyInfo-1": 1,  
  4.     "MyInfo-2": 2,  
  5.     "MyInfo-3": 3  
  6. };  
  7. $scope.bindMyInfoTypes = function(typeValue) {  
  8.     switch (parseInt(typeValue)) {  
  9.         case myInfoTypes.MyInfo - 0:  
  10.             $scope.MyInfo = "MyInfo-0";  
  11.             console.log("It is" + $scope.MyInfo);  
  12.             break;  
  13.         case myInfoTypes.MyInfo - 1:  
  14.             $scope.MyInfo = "MyInfo-1";  
  15.             console.log("It is" + $scope.MyInfo);  
  16.             break;  
  17.         case myInfoTypes.MyInfo - 2:  
  18.             $scope.MyInfo = "MyInfo-2";  
  19.             console.log("It is" + $scope.MyInfo);  
  20.             break;  
  21.         case myInfoTypes.MyInfo - 3:  
  22.             $scope.MyInfo = "MyInfo-3";  
  23.             console.log("It is" + $scope.MyInfo);  
  24.             break;  
  25.     }  
  26. }  
  27. //Invoke above function as like shown in below code  
  28. $scope.bindMyInfoTypes(2);   

Code explanation

  1. var myInfoTypes = { "MyInf0-0": 0, "MyInfo-1": 1, "MyInfo-2": 2, "MyInfo-3": 3 };  

The line of code given above indicates that

We stored the data inside the variable with the name myInfoTypes with typeValue and its associated information format.

  • Now, in order to bind type value, we need to invoke bindMyInfoTypes() function with typeValue as a parameter.

Let us say we will invoke it with the value 2, as shown below.

  1. $scope.bindMyInfoTypes(2);   

Now, observe once we invoked

$scope.BindMyInfoTypes(2) this function with typeValue ==2

The program given above will produce the output, as expected; i.e.,

  • It is MyInfo-2

It matches the case with the value 2.

It is working similarly as we use it in .NET Applications.



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