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Author

check valid tag id

reubin haz
Ranch Hand

Joined: May 12, 2005
Posts: 287
I'd like to check if a given tag ID exists or not. I tried
typeof document.getElementById(givenID).innerHTML != "string"
or
document.getElementById(givenID).innerHTML != null

but both of them fail. Does someone know how to check if the given tag id is valid?

thanks.


SCJA, SCJP5.0, SCBCD, SCWCD
Eric Pascarello
author
Rancher

Joined: Nov 08, 2001
Posts: 15376
    
    6
if(typeof(document.getElementById("someId")) != "undefined")alert("I am here");
 
Don't get me started about those stupid light bulbs.
 
subject: check valid tag id