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) {
          


        

Answer 1

Check the index

$(this).index() == 0 // is first

Answer 2

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

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

Answer 3

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.

Answer 4

Keep it simple, use the DOM

$("li").click(function(e) {

    if (this.previousSibling != null)
    {
        /* do something */
    }

});