How to Use Switch Case Formatting in JavaScript?

The formatting of a switch statement in JavaScript is a matter of personal preference and coding style, but there are a few general guidelines that can help make your code more readable and maintainable.

Here are some tips for formatting switch statements in JavaScript:

1. Indent the code inside each case: This makes it easier to see which code belongs to which case, and makes the overall structure of the switch statement more apparent.
2. Use a break statement after each case: This ensures that only the code for the matching case is executed, and helps to prevent accidental fall-through to the next case.
3. Keep each case concise: Avoid adding too much code to each case, as this can make the switch statement hard to read and understand. If a case requires a lot of code, consider refactoring it into a separate function.
4. Use a default case: If a default case is not provided, the switch statement will simply exit without executing any code if no match is found. Including a default case with a descriptive message can help catch bugs and make the code more robust.
5. Use meaningful variable names: The variable being evaluated in the switch statement should have a meaningful name that accurately reflects its purpose.

Here is an example of a well-formatted switch statement in JavaScript:

var day = "Monday";

switch (day) {
  case "Monday":
    console.log("Today is Monday.");
    break;
  case "Tuesday":
    console.log("Today is Tuesday.");
    break;
  case "Wednesday":
    console.log("Today is Wednesday.");
    break;
  default:
    console.log("Today is not Monday, Tuesday, or Wednesday.");
}