The jQuery Eq method is used to select elements by their index. The index in jQuery always starts with 0.
The index can be positive or negative. Negative index will start from the end while positive index starts from 0. If I provide -1 to the .eq(-1) then the last element will be selected.
There is a div that contains 4 p elements. To selected the 3rd p element I will pass 2 to the jQuery Eq Method.
<div id="div1"> <p>First</p> <p>Second</p> <p>Third</p> <p>Fourth</p> </div> $("#div1 p").eq(2).css("background-color", "purple");
The above code will turn the 3rd p element purple.
Now I can also use the negative integer values to select element from the end. So to change background color of the last element I can use the following code:
$("#div1 p").eq(-1).css("background-color", "purple");
Check the below link: