How to Use the Break Statement in JavaScript

Normally JavaScript loops run as long as some condition is satisfied. The break statement allows the programmer to break out a loop immediately and unconditionally. It is also used to terminate processing of a case in a switch statement.

Things You'll Need

• JavaScript editor

Instructions

Use the Break Statement in JavaScript

1. Find or code the for or while loop from which you want to break out.

2. Code the break statement at the point where you want to break out from the loop. Example:
   while (true) {
...
if (number_errors > 100) break;
...
}

3. Code a break statement following the statements after a case statement inside a switch statement. Otherwise, execution will continue with the statements for the following case, which is probably not what you want. Example:
   switch (name) {
case "Bob": alert ("You're Bob."); break;
...
}

Tips & Warnings

• Coding a break outside a loop or switch will result in an error.