Re: javascript - use getElementById to get element within a div

[Matt Lavinder <mlavinder@xxxxxxxxxxxxxxxxxxx>]

The following should work fine:

document.getElementById('elemInMyDiv');

If you this is an issue because you are creating elements with duplicate ID
names, it is allowed but considered bad practice.  I would recommend adding
a counter of something similar so that all the "id" attributes are unique.
When you want to group elements together using an attribute, use "class" or
"name" - keep ID unique and your life will be a lot easier.

That all said, if you want to dig out a specific element within a DIV, it
can be done but it is a little extra work.  You would have to loop through
all the elements until you find the one with a matching ID.  Having a unique
ID for each element is usually a much simpler way of handling things.



On Thu, Jun 9, 2011 at 2:35 PM, Hockchai Lim
<lim.hock-chai@xxxxxxxxxxxxxxx>wrote:

> Do anyone know how I can use js to get DOM element within a <div>.  I tried
> below but it does not work:
>
> var myDiv = document.getElementById('myDiv');
> alert(myDiv.getElementById('elemInMyDiv').value);
>
>
>
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