JavaScript Switch Case

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The JavaScript Switch Case statement is used to perform different actions based on different conditions.

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Flow Chart of JavaScript Switch Case:

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Let’s see the simple example of switch statement in java script.

<script>

var grade='B';

var result;

switch(grade){

case 'A':

result="A Grade";

break;

case 'B':

result="B Grade";

break;

case 'C':

result="C Grade";

break;

default:

result="No Grade";

}

document.write(result);

</script>

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The Break Keyword

When Java Script code reaches a break keyword, it breaks out of the switch block. This will stop the execution of more code and case testing inside the block.

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The default Keyword

The default keyword specifies the code to run if there is no case match.

 var color ="yellow";

switch(color) {

   case "blue": 

     document.write("This is blue.");

     break;

   case "red": 

     document.write("This is red.");

     break;

   case "green": 

     document.write("This is green."); 

     break;

   case "orange": 

      document.write("This is orange."); 

      break;

   default: 

      document.write("Color not found.");

}



//Outputs "Color not found."

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