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JavaScript JavaScript Loops, Arrays and Objects Tracking Data Using Objects The Student Record Search Challenge

Posted by Vinnie Dauer
Vinnie Dauer
12,824 Points

Am I using null incorrectly?

The following is my code for this challenge. Everything works, except that if searchInput is null, it doesn't break the loop. Any insight into what I'm doing wrong is appreciated.

here's my code:

1 Answer

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Hi Vinnie,

Your code works fine for me and breaks the loop if Cancel is pressed however I assume you're referring to what happens when the OK button is pressed without a value? If so you can solve this simply by checking for a falsy value by using the below.

if (!searchInput || searchInput === 'quit') {
  // Code here...
}

What this does is it checks for empty strings, null and even undefined as they all result in a falsy value, one thing to keep in mind is that null and undefined aren't the same as well as empty strings can't be compared to null and undefined.

Hope that helps.

Vinnie Dauer
Vinnie Dauer
12,824 Points

Thanks very much! That clears it up and I've been educated. Much obliged.