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three dynamic lists to be populated from a servlet with ajax

Kanika Sud
Greenhorn

Joined: May 09, 2011
Posts: 21
my problem is with the selected index property of a dynamic list that is populated from a servlet.

Let's say a list A is populated from a servlet. The inner HTML comes from the servlet as responseText and is used in the callBack function of ajax:

Here's the script:
s = xmlHttpRequest.responseText;
var drop = '<select name="' + dynaDiv + '" id="' + dynaDiv + '">' + s + '</select>';
document.getElementById(dynaDiv).innerHTML = drop;


where s comes from the servlet as:



Now if I want to create another list dynamically, let's say B, based on the selection in A, how do I retrieve the selected index of A in a script? I tried but it gives null. The aim is to generate a link of such lists. Moreover, I thought that since the list has been populated as a string(responseText rather than responseXML) the problem lies here. But if I change it to responseXML, how do return values from the servlet? (Given that I need one set for value and one for text)

Please help. It's a little Urgent.


Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 61206
    
  66

A change handler will tell you when a select element has been changed. You can grab the newly selected value and use it to fetch the next set of options for the subsequent select.

By the way, all of this is much (much much) easier with a library such as jQuery or Dojo.


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Kanika Sud
Greenhorn

Joined: May 09, 2011
Posts: 21
Thanks, I used the following and it worked for me:

 
I agree. Here's the link: http://aspose.com/file-tools
 
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