The Switch Statement in javascript is used to perform operations based on certain conditions. It has the same working as that of the Else-if condition.

There are cases in the switch statement and as per that cases, different conditions are made to execute.

The code showing the working of the switch statement is mentioned below -

let age = 2; switch (age) { case 1: age = 'Twenty'; break; case 2: a = 'Twenty Two'; break; default: a = 'Very Young'; break; } console.log(The value is ${a});
//Output: The value is Twenty-Two

Working of Switch Statement

The working of the Switch Statement is described in the points mentioned below -

1. The evaluation of the switch will take only once.
2. The main value of the expression will be matched with all the cases.
3. The matched block will be executed.
4. Unmatched block will not be executed.
5. If multiple cases get matched, the first case will be selected.
6. If no case matched, the default case will execute.

Break and Default Keywords

When the break keyword is written below the case, the execution of the switch block will be stopped.

The default keyword specifies the code that will be executed when there is no match in the switch block.