When JavaScript encounters a break keyword, it exits the switch block.
This stops further execution within the switch block.
It is not required to include a break statement for the last case in a switch block, as the block will end there regardless.
| Note: If you omit the break statement, the next case will execute even if the evaluation does not match that case. |
The default keyword designates the code to execute if none of the cases match.
The getDay() method returns the day of the week as a number from 0 to 6.
If today is neither Saturday (6) nor Sunday (0), display a default message:
| switch (new Date().getDay()) { case 6: text = “Today is Saturday”; break; case 0: text = “Today is Sunday”; break; default: text = “Looking forward to the Weekend”; } |
The resulting text will be:
| Eagerly anticipating the weekend! |
The default case does not need to be positioned as the last case in a switch block.
| switch (new Date().getDay()) { default: text = “Looking forward to the Weekend”; break; case 6: text = “Today is Saturday”; break; case 0: text = “Today is Sunday”; } |
| If the default case is not the last one in the switch block, be sure to end it with a break statement. |
Sometimes you may want multiple switch cases to execute the same code.
In this example, cases 4 and 5 share one code block, while cases 0 and 6 share another.
| switch (new Date().getDay()) { case 4: case 5: text = “Soon it is Weekend”; break; case 0: case 6: text = “It is Weekend”; break; default: text = “Looking forward to the Weekend”; } |