What does jquery mean?

jQuery is a fast, small and feature-rich JavaScript library. It is a class library developed to simplify JS development or DOM and other operations; it encapsulates commonly used functional codes (functions) of JS and provides a A simple JS design pattern that optimizes HTML document operations, event processing, animation design, Ajax interaction, etc.

The operating environment of this tutorial: windows7 system, jquery3.6 version, Dell G3 computer.

What does jquery mean

jQuery is a fast, small and feature-rich JavaScript library. Things like traversing and manipulating HTML documents, event handling, animations, and Ajax are made easier with an easy-to-use API that works across multiple browsers.

jQuery is a tool library for JavaScript. The tool library refers to encapsulated JavaScript functions that can be called directly in the program. Then jQuery is a very popular JavaScript library. jQuery is designed to "write less code and do more." The jQuery library encapsulates commonly used functional codes in JavaScript, provides a simple JavaScript design pattern, and optimizes HTML document operations, event processing, animation design and Ajax interaction

The core features of jQuery can be summarized as: It has a unique chain It has a simple syntax and a short and clear multi-functional interface; it has an efficient and flexible CSS selector, and can extend the CSS selector; it has a convenient plug-in extension mechanism and rich plug-ins. jQuery is compatible with various mainstream browsers, such as IE 6.0, FF 1.5, Safari 2.0, Opera 9.0, etc.

jQuery Features

• #Quickly obtain document elements

  jQuery’s selection mechanism is built on the Css selector, which provides The ability to quickly query elements in DOM documents, and greatly enhances the way to obtain page elements in JavaScript.

• Provide beautiful page dynamic effects

  jQuery has a series of built-in animation effects, which can develop very beautiful web pages. Many websites use jQuery’s built-in Effects, such as fade in and fade out, element removal and other dynamic special effects.

• Create AJAX non-refresh web pages

  AJAX is the abbreviation of asynchronous JavaScript and XML. It can develop very sensitive non-refresh web pages, especially when developing server-side web pages. , such as PHP websites, need to communicate with the server back and forth. If AJAX is not used, the web page has to be refreshed every time the data is updated. However, after using AJAX special effects, the page can be partially refreshed to provide dynamic effects.

• Provides enhancements to the JavaScript language

  jQuery provides enhancements to basic JavaScript structures, such as element iteration and array processing.

• Enhanced event handling

  jQuery provides various page events, which can avoid programmers from adding too much event handling code in HTML. Most importantly, Its event handlers eliminate various browser compatibility issues.

• Change the content of the web page

  jQuery can modify the content of the web page, such as changing the text of the web page, inserting or flipping the web page image. jQuery simplifies the processing that needs to be done using JavaScript code The way.

What can jquery be used for?

From the above we can know that jquery is a class library of javascript. In the final analysis, jquery is javascript. jquery is mainly used to simplify various operations of javascript and solve the problems between various browsers. compatibility. So what is jquery used for? Let’s summarize it below.

1. jquery can be used to obtain page elements

2. jquery can be used to modify the page appearance

3. jquery can be used to change the large content of the page

4. jquery can be used to respond to user page operations

5. jquery can be used to add dynamic effects to the page

6. jquery can be used to complete the page without dynamically refreshing the page. The server obtains information

7. jquery can be used to simplify common javaScript tasks

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