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03.26.2008 at 08:23AM PDT, ID: 23270755
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7.4

Using javascript to handle asp.net1.1 dropdown selected changes??

Asked by tentavarious in JavaScript, Programming for ASP.NET

I am using javascript to show the selected values from an asp.net dropdown.  I set up a variable called Index to hold the index of the selected item.  For some reason the content of the index variable ="undefined", can someone look at this?  My code is below

function dropcheck(){
var tempvalue
var Index = document.getElementById('ddlhrs').selectedvalue;
  tempvalue = document.getElementById('ddlhrs').options[Index].value;
   if (tempvalue.substring(0,1) > 1){
  //make div visible
  document.getElementById("dwork").style.display = "block";
 }
  else {
  //make div hidden
  document.getElementById("dwork").style.display = "none";
  }
}

<!--   Asp.net dropdown -->
<asp:dropdownlist id="ddlhrs" runat="server" Font-Names="helvetica" BackColor="Cornsilk" Enabled="False" onchange="dropcheck()"></asp:dropdownlist>

Here is what the page source looks like for the dropdown
<select name="ddlhrs" id="ddlhrs" onchange="dropcheck()" style="background-color:Cornsilk;font-family:helvetica;">
      <option value="Select One">Select One</option>
      <option value="232206">8M</option>
      <option value="232205">7M</option>
      <option value="232203">5M</option>
      <option value="232202">4M</option>
      <option value="232200">2M</option>
      <option value="232180">1M</option>
</select>Start Free Trial
[+][-]03.26.2008 at 09:25AM PDT, ID: 21213360

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[+][-]03.26.2008 at 09:37AM PDT, ID: 21213509

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[+][-]03.26.2008 at 11:10AM PDT, ID: 21214547

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[+][-]04.16.2008 at 01:07AM PDT, ID: 21365667

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[+][-]04.16.2008 at 06:42AM PDT, ID: 21367638

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About this solution

Zones: JavaScript, Programming for ASP.NET
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Solution Provided By: tentavarious
Participating Experts: 2
Solution Grade: B
 
 
[+][-]04.20.2008 at 07:41AM PDT, ID: 21396146

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