get selectedIndex

[copeZero]

Hi, this JS issue is driving me crazy, any reasons why i can't get the select index value of a dropDown:

dobMonth.Attributes.Add("onchange", "alert(document.forms[0].dobYear.value);alert(this.value);alert(document.getElementById('dobDay').options[document.getElementById('dobDay').selectedIndex].value);");

I get the first alert, the second alert, but not the third alert ...?

Besides:
document.getElementById('dobDay').options[document.getElementById('dobDay').selectedIndex].value)

I've tried by associative array:
document.forms[0].dobDay.options[document.forms[0].dobDay.selectedIndex].value

I know the JS is good, so it must be a flaw in my thinking.. that i can access the value as such. How can this be accomplished?

Thanks

 

[AlexCuse]

Here's the place to ask: forum216

Good Luck,

Alex

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[AlexCuse]

copeZero - I may understand your question now. Is 'dobDay' a server-side ASP.net control?

If so, you'll need to expose its' selected index as a property, like this:

    public int selInd
    {
        get
        {
            return dobDay.SelectedIndex;
        }
    }

Then, you access it from client side script like this:

    function myAlert(){
    alert(<%=selInd %>);
    }

The <% %> indicates that you are getting the value from the server side when the page loads. For this to respond to change, auto-post back needs to be enabled on your drop-down.

The ASP.net guys might no of a better way to do this.

Hope this helps,

Alex

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