Combobox item style

问题

my project is asp.net MVC, using Telerik MVC combobox. I can change the sytle of the first item if I use:

var item = combobox.dropDown.$items.first();
item.addClass('test');

Or change all items, using:

combobox.dropDown.$items.addClass('test');

But I need to change just specific items (based on a model), I tried:

combobox.dropDown.$items[1].addClass('test');

I get this error: Object doesn't support property or method 'addClass'

回答1:

If it's a jQuery object, you should replace:

combobox.dropDown.$items[1].addClass('test');

With:

combobox.dropDown.$items.eq(1).addClass('test');

$items[1] gives you the DOM object which doesn't have the jQuery addClass function. $items.eq(1) gives you the jQuery object which has the jQuery addClass function.

来源：https://stackoverflow.com/questions/12556524/combobox-item-style