Compare two dropdowns in ASP.NET

[ganeshshegde]

Hi,
How can i compare values of two dropdown lists in .aspx page using javascript?

I used following code-

 
function ValidateFlightRequest()
{
        var vFromCombo = igcmbo_getComboById("ctl00_SearchBar1_ddlLeftsearchFrom");
 
       var vToCombo = igcmbo_getComboById("ctl00_SearchBar1_ddlLeftsearchTo");
 
       if(vFromCombo.getSelectedIndex() == vToCombo.getSelectedIndex())
       {
            alert("From Airport and two airport cann't be same");
            return false;
       }
}

[Frinavale]

Hi,
How can i compare values of two dropdown lists in .aspx page using javascript?

I used following code-

 
function ValidateFlightRequest()
{
        var vFromCombo = igcmbo_getComboById("ctl00_SearchBar1_ddlLeftsearchFrom");
 
       var vToCombo = igcmbo_getComboById("ctl00_SearchBar1_ddlLeftsearchTo");
 
       if(vFromCombo.getSelectedIndex() == vToCombo.getSelectedIndex())
       {
            alert("From Airport and two airport cann't be same");
            return false;
       }
}

Hi Ganeshshegde!
Welcome to theScripts, I hope you like it here!

Why would you want to do this using JavaScript?
Please note that people can easily by-pass JavaScript checks and submit invalid data to mess up your program.

Anyways, I would do this check server side on button click.
If it the arports match you could just set an error message in a label instead of using a JavaScript alert box.

Is it absolutely necessary to use JavaScript for this?

-Frinny