troubleshooting Question

In Javascript, what does "if (x) x  =" mean?

Avatar of James Froggatt
James FroggattFlag for France asked on
JavaScriptJSON
6 Comments1 Solution101 ViewsLast Modified:
I'm writing an auto-complete script little by little (html/ plain javascript/ php/ ajax).

I've come across the following code:

var x = document.getElementById(this.id + "autocomplete-list");
if (x) x = x.getElementsByTagName("div");

... and would like to understand this particular bit of the above code

What does the following bit mean? I've never seen logic like this before.

if (x) x  =  


Is this a comparison / some kind of logical operator? I'm wondering if it's a way to detect whether x is NULL and so get information from the immediate parent element. Nevertheless, I'd like to understand what it means.

If so, in 'long English', what does it mean?

Thank you
ASKER CERTIFIED SOLUTION
ste5an
Senior Developer

Our community of experts have been thoroughly vetted for their expertise and industry experience.

Join our community to see this answer!
Unlock 1 Answer and 6 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 6 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros