jQuery framework overview-JS Tutorial-php.cn

1. jQuery is a JavaScript function library. jQuery is a lightweight "write less, do more" JavaScript library. The jQuery library contains the following functions:

HTML element selection
HTML element manipulation
CSS manipulation
HTML event function
JavaScript special effects and animation
HTML DOM traversal and modification
AJAX
Utilities

##2.jQury Advantages

Lightweight, Powerful selector, excellent DOM operation encapsulation, reliable event processing mechanism, perfect Ajax, no pollution of top-level variables, excellent browser compatibility, chain operation mode, implicit iteration, separation of behavior layer and structure layer , Rich plug-in support:, complete documentation, open source.

3. There are many ways to add jQuery to a web page. You can use the following methods:

Download jQuery library from jquery.com
Load jQuery from CDN, such as loading jQuery from Google

4. Download jQuery from the official website

(1) Enter the official website (https://jquery.com/download/)

(2) Single Click the "Download jQuery" button to enter the download page

(3) There are two versions of jQuery available for download:

Production version - used in actual websites, Has been streamlined and compressed.
Development version - for testing and development (uncompressed, readable code)

(4) The jQuery library is a JavaScript file, you can reference it using the HTML