How to check if the element is not the first-child?

Question

How do you know if the current element is not the first-child?

It should work with $(this), for example:

$("li").click(function(e) {
    if (/* $(this) is not the first-child */)
    {
        /* do something */
    }
});

Solution 1

You can do this just to test an element if it's the first child: $(this).is(':first-child'). Other selectors like :last-child would work too.

Solution 2

You could simply ask for its .index() position (relative to its siblings).

$(this).index();   // returns a zero based index position

Solution 3

For all li's in #thing that aren't first child:

$('#thing li:not(:first-child)')

see http://api.jquery.com/not-selector/

Solution 4

If you would like to select everything except the first child, this is how to do it:

$('#some-parent').children().not(':first')

Solution 5

Also, you can check if $(this).prev().length is defined, like in:

if (!$(this).prev().length){ //This means $(this is the first child
    //do stuff
}

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