Use jQuery to manage selection result _ jquery

This article mainly describes how to use jQuery to manage selection results. For more information, see the elements selected by jQuery, you can use a series of methods provided by jQuery to process it, including length, searching for an element, and intercepting a paragraph.

1. Obtain the number of elements.

In jQuery, you can use the size () method to obtain the number of elements in the selector. It is similar to the length attribute in the array and returns an integer. For example:

$ ("Img"). size ()
Retrieve the number of all images on the page

The following example shows how to add p blocks and calculate

Block.

The Code is as follows: