Is jquery a script library?

jquery is a script library. jquery is a simple and fast javascript script library that can be used to simplify event handling, HTML document traversal, Ajax interaction and animation for rapid website development. Using jQuery will greatly improve the efficiency of writing JavaScript code, making the code written more concise and more robust; at the same time, the rich jQuery plug-ins on the Internet also make the work of developers easier and improve the development efficiency of the project. Quality improvement.

The operating environment of this tutorial: windows7 system, jquery3.6.1 version, Dell G3 computer.

Introduction to jQuery

jQuery is a set of simple, fast and flexible JavaScript script libraries. It was created by John Resig in 2006 , it helps us simplify JavaScript code and can be used to simplify event handling, HTML document traversal, Ajax interaction and animation for rapid website development. jQuery simplifies client-side scripting of HTML, thereby simplifying the development of Web 2.0 applications.

The JavaScript script library is similar to the Java class library. We encapsulate some tool methods or object methods in the class library to facilitate user use. jQuery has been praised by a large number of developers because of its simplicity and ease of use. [Recommended learning: jQuery video tutorial]

jQuery is a script library, not a framework. "Library" is not equal to "framework". For example, "System Assembly" is a class library, and Spring MVC is a framework.

The script library can help us complete coding logic and realize business functions. Using jQuery will greatly improve the efficiency of writing JavaScript code, making the code written more concise and robust. At the same time, the abundant jQuery plug-ins on the Internet also make the work of developers easier and improve the development efficiency of the project.

In addition to providing developers with a flexible development environment, jQuery is also open source and has the support of many strong communities and program enthusiasts behind it.

jQuery is not only suitable for web designers, developers and programming enthusiasts, but also suitable for commercial development. It can be said that jQuery is suitable for any place where JavaScript is used.

Features of jQuery

jQuery is a simple and fast JavaScript script library that allows you to simply operate documents and process on web pages events, run animation effects, or add asynchronous interactions.

The design of jQuery will change the way you write JavaScript code and improve our programming efficiency.

The main features of jQuery are as follows:

1. The code is exquisite and compact

jQuery is a lightweight JavaScript script library, and its code is very compact. The latest version of the jQuery library file is only about 20K after compression.

In today's day when the Internet is prevalent, it is particularly important to improve website user experience, and the compact jQuery can do this.

2. Powerful functional functions

In the past, when writing JavaScript code, it was difficult to write complex JavaScript code without a good foundation, and JavaScript is In non-compilable languages, debugging errors in complex program structures is a very painful thing, which greatly reduces development efficiency.

Using jQuery's functional functions can help developers quickly implement various functions, and will make the code elegant, concise and clear in structure.

3. Cross-browser

The browser compatibility issue of JavaScript code has always been a nightmare for web developers. Often a page runs normally under IE browser. However, problems do occur inexplicably under Firefox. Developers often have to write different script codes for different browsers on one function, which is a very painful thing for developers.

jQuery frees developers from this nightmare. jQuery has good compatibility. It is compatible with major mainstream browsers. Supported browsers include IE 6.0, Firefox 1.5, Safari 2.0, Opera 9.0.

4. Chain syntax style

jQuery can perform unified processing on a set of operations on elements without re-obtaining the object.

That is to say, a set of operations can be performed based on an object. This method simplifies the amount of code, reduces the page size, helps the browser load the page quickly, and improves the user experience.

It is not recommended for beginners to use the chain syntax structure.

5. Rich plug-ins

In addition to some special effects provided by jQuery itself, more functions can be implemented through plug-ins, such as form validation, drag-and-drop effects, and Tab Navigation bar, table sorting, tree menu and image effects, etc.

[Recommended learning: jQuery video, web front-end development]

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