how to learn jquery

Learning jquery is very interesting. When getting started, it is best to refer to the API and go through all the common methods, which is very useful. The encapsulation of dom/element operations in jquery is very good, and there are many convenient and practical methods for animation. At the same time, the ajax encapsulation also makes people use it. It feels very convenient. After you get started with jquery and are able to use jquery statements to operate elements skillfully, please study more about the encapsulation of jquery fields and other people's more mature controls developed based on jquery. This will make your Programming habits and ideas will be closer to jquery. Since jquery still has flaws, after you have learned it to a certain extent, you can also try to understand the source code of jquery and explore the principles of jquery from the ground up. Become a real expert

Recommended tutorial: jQuery video tutorial

Extended information

jQuery is a fast and concise JavaScript framework is another excellent JavaScript code library (or JavaScript framework) after Prototype. The purpose of jQuery's design is "write less, do more", which means writing less code and doing more things. It encapsulates common JavaScript function codes, 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 follows: It has a unique chain 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 convenient plug-in extensions 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.

Language features

Quickly obtain document elements

jQuery’s selection mechanism is built on 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, it The event handler eliminates 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.

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