Using jquery, when I click on a link, how can I refer to a select dropdown right above it?

I have a link and I l开发者_运维问答isten to the click event. In the event handler, I want to validate that the user has actually made a choice on the select dropdown right above this link.

How can I get a reference to this select item relative to my link so I can validate it?

here is the html below. the event handler is on the click of the ".Next" link.

 <select class="dropdown" name="myDropdown">
 <option value="">Select Item . . .</option>
 <option value="1">1</option>
 <option value="2">2</option>
 </select>

 <br>
 <a id="Next3" class="Next" href="">Next</a>&nbsp;

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Using JQuery, the most specific selector looks like:

var reference = $("#Next3").prevAll("select.dropdown[name='myDropdown']:first")[0];
var selectedAny = reference.value != "";

Explanation of code: $("#Next3") refers to the link with id="Next3" .prevAll() is a function which selects all previous elements according to a selector (justprev doesn't work).

select.dropdown[name='myDropdown']:first selects the first (closest) occurence of the selectelement, which class is dropdown and name equalsmyDropdown(case sensitive).

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If the select is directly before the link then you can use prev http://api.jquery.com/prev/

If the HTML is more complicated then that you'll need to post it.

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You can use sibling or parent selectors or a combination both but I would not recommend it since those kinds of selector tend to be fragile. When you change the structure of your html the selector might fail.

I think it would be better if you give your dropdown an id, then associate that id with the link using jquery.data().

Update: Given the html you posted, try using the closest() filter.

e.g. in your event handler:

function someEventHandler() {
  $(this).closest('select.dropdown')...
}

If the name is known or there is only one pair of link-dropdown you can just refer to the select by name then.