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Get Selected Value of DropDownList using Javascript

This shouldn't be hard

Here's my Javascript code:

var dropdown = document.getElementById(<%= ddlStateID.ClientID %>);
var text = dropdown.options[dropdown.selectedIndex].value;

and heres my dropdownlist control:

<asp:DropDownList ID="ddlCountryID" onChange="SelectStates(this)" runat="server"></asp:DropDownList>

but everytime i change the selection i get this error:
Error: 'ct100_ContentPlaceHolder1_ddlCountryID' is undefined.

I think it's just how i'm calling the options or something in the javascript...i've seen this before, fixed this before, but can't find the code where i did it. Big deadline on monday and i'm going nuts.

third

isn't this supposed to be

<%= ddlCountryID.ClientID %>

since your dropdown is

<asp:DropDownList ID="ddlCountryID" onChange="SelectStates(this)" runat="server"></asp:DropDownList>

third

another way is run your aspx page from a browser and check the assigned id of your dropdown. substitute that id to your javascript function.

third

also, I think you missed the single quotes.

var dropdown = document.getElementById('<%=ddlCountryID.ClientID%>');

davidcahan

ASKER

yea, it is ddlCountryID.ClientID. I pasted my code from an earlier undo.

davidcahan

ASKER

I found my code to do it. It's just a slight wrinkle from other syntax i've seen posted on other sites. None of that stuff ever worked, but this does:

var text = document.getElementById('<%= ddlCountryID.ClientID %>').options[document.getElementById('<%= ddlCountryID.ClientID %>').selectedIndex].value;

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third

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davidcahan

ASKER

I'll give ya the points cause you helped get me motivated enough to find my own code, plus your answer was in the right direction

manojkumarps

var ddlist=document.getElementById('<%=ddlCountryID.ClientID%>');
var val = ddlist.options[ddlist.selectedIndex].value;
var text = ddlist.options[ddlist.selectedIndex].text;

Where ddlCountryID is the comboBox Name