What are the advantages of jquery

Advantages of jquery: 1. Lightweight; 2. Powerful selector; 3. Excellent DOM operation encapsulation; 4. Reliable event processing mechanism; 5. Perfect Ajax; 6. Does not pollute the top level Variables; 7. Excellent browser compatibility; 8. Chain operation mode; 9. Implicit iteration; 10. Rich plug-in support; 11. Complete documentation, etc.

The operating environment of this tutorial: windows7 system, jquery1.10.2 version, Dell G3 computer.

13 Advantages of jQuery

1. Lightweight

JQuery is very lightweight and uses Packer written by Dean Edwards After compression, the size is less than 30KB. If you use the Min version and enable Gzip compression on the server side, the size is only 18KB.

2. Powerful selectors

JQuery allows developers to use almost all selectors from CSS1 to CSS3, as well as JQuery’s original advanced and complex selectors. In addition, plug-ins can be added to support XPath selectors, and developers can even write their own selectors. Since JQuery supports the selector feature, developers with certain CSS experience can easily jump into learning JQuery.

3. Excellent encapsulation of DOM operations

JQuery encapsulates a large number of commonly used DOM operations, making it easy for developers to write programs related to DOM operations. JQuery easily completes various operations that were originally very complex, allowing JavaScript novices to write excellent programs.

4. Reliable event processing mechanism

JQuery’s event processing mechanism absorbs the essence of the event processing function written by JavaScript expert Dean Edwards. It is JQuery that handles events. Very reliable when binding. JQuery also does a very good job in terms of reserved escape routes, step-by-step and non-invasive programming ideas.

5. Perfect Ajax

JQuery encapsulates all Ajax operations into a function $.ajax(), allowing developers to concentrate on processing Ajax Business logic without having to worry about complex browser compatibility and the creation and use of XMLHttpRequest objects.

6. Do not pollute top-level variables

JQuery only creates an object named JQuery, and all its function methods are under this object. Its alias $ can also exchange control rights at any time and will never pollute other objects. This feature allows JQuery to coexist with other JavaScript libraries and be safely referenced in projects without considering later conflicts.

7. Excellent browser compatibility

As a popular JavaScript library, browser compatibility is one of the necessary conditions. JQuery can run normally under IE6.0, FF 2, Safari2. and Opera9.0. JQuery also fixes some differences between browsers, so developers don't have to build browser compatibility libraries before starting a project.

8. Chained operation method

The most distinctive thing about JQuery is its chained operation method-that is, for operations that occur on the same JQuery object A set of actions can be written directly in succession without the need to repeatedly obtain the object. This feature makes JQuery code extremely elegant.

9. Implicit iteration

When using JQuery to find all elements with the ".myClass" class and then hide them. No need to loop through each returned element. On the contrary, the methods in JQuery are designed to automatically operate on collections of objects instead of individual objects, which makes a large number of loop structures unnecessary, thus greatly reducing the amount of code.

10. Separation of behavior layer and structure layer

Developers can use selectors to select elements and then directly add events to the elements. This idea of ​​completely separating the behavioral layer from the structural layer allows JQuery developers and HTML or other page developers to perform their own duties, getting rid of the past development conflicts or individual development models. At the same time, post-maintenance is also very convenient. There is no need to find certain functions in the HTML code and repeatedly modify the HTML code.

11. Rich plug-in support

JQuery’s easy scalability has attracted developers from all over the world to write JQuery extension plug-ins. There are currently more than hundreds of official plug-ins supported, and new plug-ins are constantly being interviewed.

12. Complete documentation

JQuery’s documentation is very rich. At present, there are many English documents and relatively few Chinese documents. Many teams who love JQuery are working hard to improve JQuery Chinese documentation, such as JQuery's Chinese API.

13. Open source

JQuery is an open source product that anyone can freely use and make modifications to.

Recommended related video tutorials: jQuery Tutorial (Video)

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