Question

176

Get an element's ID and compare it to a string OR another ID

rated 0 times [ 179] [ 3] / answers: 1 / hits: 33423 / 11 Years ago, tue, july 2, 2013, 12:00:00

How can I get the ID of an element and compare it to a string OR another id ?

What I would like to do exactly is make a condition that would get the element's ID and compare it to a certain string or another element's ID.

I have this piece of code right now to compare my id to another id (which obviously doesn't work):

function Something(elemid)

{

 if(elemid == document.getElementById('myid').id)

   {

    ...

   }

}

Or this piece of code to compare to a string (doesn't work either):

if(elemid == mystring)

{

...

}

This is a simple problem, but still, I can't seem to find anything around here or even on other websites that would be what I am searching for.
I can't use any JQuery whatsoever, so any Javascript only anwser would be really appreciated.

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jameson

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answered 11 Years ago ibrahimgilbertoz · Accepted Answer

 if(elemid = document.getElementById('myid').id)

   {

    ...

   }

You need to compare it using ==. A single = is assign.

Also document.getElementById('myid').id is completely useless. You are specifying the id directly and then attempt to return it.

As a simple test to show you how to compare an element.

<input type=text id=hello class=test />



var element = document.getElementsByClassName(test)[0].id;



if (element === hello) {

   alert(Working); 

}

http://jsfiddle.net/ckJP9/