Javascript: help find my problem please

[organ_pleasin]

I'm working on a web page for a class, and came up with a system to identify missing fields(and show the user what fields have been filled once all are filled). I have narrowed down a problem in the web page to this function. Can you help me identify where i went wrong?(using JavaScript in html) new 1.txt

 

(All the getElementbyID Ids' are correct)

[,,,,,,,,,,,,,,,,,,,,,,,,,,]

Missing yF.

[The Official Czex]

Missing yF.

 

new 1.txt

 

Missing yF

[organ_pleasin]

Missing yF.

True, however its still not working

[organ_pleasin]

Turns out it needed to be:

 

if(u == null || u == "") 

 

for the tiles to show, i also changed something else but cant remember what, maybe i forgot a quote as well?

Thank you for your help anyway guys