JavaScript Switch

JavaScript Switch

In order to execute one code from multiple expressions, JavaScript Switch is used. It is known to be very similar to the if-else statement and due to the permitted use of numbers and characters it is more convenient than if-else-if.

Here is the signature of JavaScript Switch Statement:

switch(expression)
{  
	case value1:  
		code that is to be executed;  
		break;  
	case value2:  
		code that is to be executed;  
		break;  
		.
		.
		.
		.   
	default:   
		code that is to be executed if above values are not matched;  
} 

Example 1

<script>
	var Class='B';  
	var result;  
	
	switch(Class)
	{  
		case 'A':  
			result="A Class";  
			break;  
		case 'B':  
			result="B Class";  
			break;  
		case 'C':  
			result="C Class";  
			break;  
		default:  
			result="No class";  
	}
	document.write(result);  
</script>

Example 2(without using Break)

<script>
	var Class='B';  
	var result;  
	
	switch(Class)
	{  
		case 'A':  
			result=" A Class";  
		case 'B':  
			result=" B Class";  
		case 'C':  
			result=" C Class";  
		default:  
			result=" No Class";  
	}  
	document.write(result);
</script>	

Example 3(Check day and Print Days name)

<script>
	var day=3;  
	var result;  
	
	switch(day)
	{  
		case 1:  
		result="Today is Monday";  
		break;
		
		case 2:  
		result="Today is Tuesday";  
		break;	

		case 3:  
		result="Today is Wednesday";  
		break;	
		
		default:  
		result="Wrongh Choice";  
	}  
	document.write(result);
</script>