Question

How to use switch case statement in JavaScript

Answer 1

function getText(lang) { 
    let text = "";
  
    switch(lang) {
        case "c#":
            text = "c#";
            break;
        case "javascript":
            text = "javascript";
            break;
        case "php":
            text = "php";
            break;
        default:
            text = "default";
    }
    return text;
}
   
console.log(getText("javascript")); 
  
  
  
   
/*
run:
  
"javascript"
  
*/
 
 

 

70+ SQL courses for beginners and professionals

Answer 2

function get_day() { 
   let day = "";
     
   switch (new Date().getDay()) {
        case 0:
            day = "Sunday";
            break;
        case 1:
            day = "Monday";
            break;
        case 2:
            day = "Tuesday";
            break;
        case 3:
            day = "Wednesday";
            break;
        case 4:
            day = "Thursday";
            break;
        case 5:
            day = "Friday";
            break;
        case 6:
            day = "Saturday";
            break;
        default:
            day = "default";
   }
   return day;
}
   
console.log(get_day()); 
 
 
 
   
/*
run:
  
"Monday"
  
*/
  

 

70+ SQL courses for beginners and professionals

Answer 3

function get_value(n) { 
   let text;
    
   switch (n) {
      case 1:
      case 2:
      case 3:
            text = "n = 1 , 2 or 3";
            break;
      case 4:
      case 5:
            text = "n = 4 or 5";
            break;
      case 9:
      case 13:
            text = "n = 9 or 13";
            break;
      default:
            text = "default";
   }
   return text;
}
  
console.log(get_value(2)); 
 
 
 
  
/*
run:
 
"n = 1 , 2 or 3"
 
*/
  

  

 

70+ SQL courses for beginners and professionals

Answer 4

const n = 1;

switch (n) {
    case 0:
        console.log(0);
    case 1:
        console.log(1);
    case 2:
        console.log(2);
    case 3:
        console.log(3);
    case 4:
        console.log(4);
        break;
    case 5:
        console.log(5);
        break;
  default:
        console.log("default");
}


  
  
  
   
/*
run:
  
1
2
3
4
  
*/

 

70+ SQL courses for beginners and professionals