Consider the following code snippetfunction fun(f) {

Home » JavaScript » JavaScript While Loop » Question

Consider the following code snippet
```
function fun(f) 
{
     if (f === undefined) debugger;
}
```
What could be the task of the statement debugger?

1. It is used to find error in the statement
2. It is used as a keyword that debugs the entire program at once
3. It debugs the error in that statement and restarts the statement’s execution
4. It does nothing but a simple breakpoint
5. None of these

Correct Option: D

The debugger statement normally does nothing. If, however, a debugger program is available and is running, then an implementation may (but is not required to) perform some kind of debugging action. In practice, this statement acts like a breakpoint: execution of JavaScript code stops and you can use the debugger to print variable’s values.