ie8 jquery addclass object does not support this property or method

I have a asp:textbox in a user control on my page. From a js file, I have my code as:

$get(_dropdownID).addClass('dropdownTextDisabled');

This is giving me an error while running in IE8: Object does not开发者_C百科 support this method or property. Reason for trying this is that IE8 does not seem to support className. Earlier code was:

dropdown.className = "dropdownTextDisabled";

Any help would be appreciated.

Maybe you are writing something wrong here:

$get(_dropdownID).addClass('dropdownTextDisabled');

shuold be

$('#_dropdownID').addClass('dropdownTextDisabled');

does it work in other browsers? What is the variable $get you are calling the method addClass() on?

$get is an ASP.NET AJAX shortcut which returns a DOM element, whereas addClass() is a jQuery function (which can only be used on jQuery objects).

Try this instead:

$('#<%= _dropdownID.ClientID %>').addClass('dropdownTextDisabled');

This is based on the assumption that _dropdownID is the ID of your ASP.NET DropDownList control.

If _dropdownID is simply the ID of an HTML <select>, do this:

$('#_dropdownID').addClass('dropdownTextDisabled');