JavaScript Switch Case Java Script

What is JavaScript Switch Case?

In this chapter, we will discuss about switch case in JavaScript.

The Switch statement is an enhanced version of if-else statement .If conditional statement serves the purpose of checking single condition, switch statement will allow you to check multiple conditions.
The switch statement is efficient way when one wants to check the value of a particular variable for many number of possible values.

Flow Chart for Switch Case

The below flow chart illustrates how a switch-case statement works.
switch_case
Syntax
The functionality of switch statement is quite simple.
The JavaScript switch statement always starts with a keyword "switch", followed by a required parameter which contains the expressionone wish to validate.
This expression is then verified against the value following each "case", and if it finds a match, it executes the associated block of code inside that case. If no match is found, it executes the default statement placed at the end of the switch statement.

Example
Look at thebelow example which illustrates the implementation of switch-case statement.
This will produce the following output:
JavaScript Switch Case Output
Break statements play a crucial role in switch-case statements.
Look at the belowexample which illustrates the usage of switch-case statement without any break statement.
This will produce the following output:
JavaScript Switch Case Output

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