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JavaScript

Posted by Robert Darby
Robert Darby
9,360 Points

Make Javascript Stop?

Is it possible to make a Javascript script stop?

For example I have a simple condition that if true I want it to display an error and not run the rest of the script. I have accomplished this by just adding a random line in the condition at the end that throws a syntax error and makes it stop.

if (true) {
      document.write("Error");
       !StopHereNow!
}

This seems like a really bad solution but it works. After much searching around it's still the only solution I have but breaking something to make it stop seems very illogical.

Is there anything wrong with doing it this way?

Is there a better way?

Thanks

2 Answers

Ace Motanya
Ace Motanya
31,756 Points

You can use 'break'

Robert Darby
Robert Darby
9,360 Points

That just breaks out of the conditional statement but still continues to run the rest of the script after the condition.

I'm looking for something that just stops it completely from running any further code at all.

akak
akak
29,446 Points
akak
akak
29,446 Points

You can try to use 'return;'. It will stop execution of the current function. Throwing an error is also an option:

throw new Error('Error');

But if you have other functions that run after the one you'd "stopped" they would run regardless.

Stopping execution of everything is, AFAIK impossible. There are ways around (using promises, setInterval) but they basically stop the execution of the code, while JS is still running in the background.