jQuery: Select elements of class X that have no siblings with that class

Question

I want to only select elements that match class X and don't have any siblings that also have class X. In my case, `X = hasDatepicker`. Here's what I've come up with: ``` $('.hasDatepicker:not(.hasDatepicker ~ .hasDatepicker)') ``` However, this does not exclude the first element, so in any group of datepickers, this will still select the first one. I don't want to include any that are in a group, only the singles. Example with 1 Match: ```

``` Example with 0 Matches: ```

Accepted Answer

It is not that elegant but it does the trick using the :first-child pseudo-selector and filtering the result set with .filter():

`:first-child` will help select only the first .test element of a possible multiple siblings list

use `.filter()` to actually check if there are no siblings with the same class

Here's the code:

```
var a = $('.test:first-child').filter(function() {
    //return $(this).parent().find('.test').not(this).length == 0;
    return !$(this).siblings('.test').length
});
```

DEMO

jQuery: Select elements of class X that have no siblings with that class

Solution

Problem