Getting Started with JQuery—Writing a Simple JQuery Application Case_jquery

1. Download from the official website: http://jquery.com
2. Introduce the JQuery file library
There is no need to install it after downloading, just import the file into the page, that is, in :
3. Write a popup Simple application of dialog box.

Copy code The code is as follows:

The rendering is as follows:
4. The basic structure of JQuery is:

Copy the code The code is as follows:

$(document).ready(function(){
//Program section
})
Similar to JavaScript code: window.onload=function(){
// Program segment
}

5.

Copy code The code is as follows:

$(document).ready(function(){
//Program section
})
Equivalent to
$(function(){
//Program section
})