Question

how do i select only 3rd( or some other no. of my chioce) li element with jquery?
for ex:
how do i change the background of only third li with jquery. any help please

Answer 1

how do i select only 3rd(

Use the eq method like this:

$('li').eq(2).css('background', 'yellow');

Or you can use this variation of :eq filter selector:

$('li:eq(2)').css('background', 'yellow');

The indexing starts from 0, you need to specify 2 to actually select the third li

If however you want to select every third element, you need to use nth-child like this:

$('li:nth-child(3n)')

The index for nth-child starts from 1 though.