Detailed explanation of jQuery development examples

jQuery is a fast and concise JavaScript framework. It 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 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 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 the Css selector, which provides the ability to quickly query elements in DOM documents, and greatly Strengthened 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, Dynamic special effects such as element removal.

Create AJAX non-refresh web pages

AJAX is the abbreviation of asynchronous JavaScript and ML, which can develop very sensitive non-refresh web pages, especially when developing server-side web pages, such as PHP websites, you need Communicate back and forth with the server. 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 to add too much event handling code in HTML. Most importantly, its 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 way that JavaScript code needs to be processed.

Language evaluation:

jQuery is another excellent lightweight JavaScript framework after prototype. Its purpose is - "Write Less, Do More", write less code and do more things. It is a fast and concise JavaScript library that simplifies HTML document element traversal, event handling, animation and Ajax interaction for rapid Web development. It is designed to change the way JavaScript scripts are written.

jQuery’s documentation is very rich. Because of its lightweight nature, the documentation is not complicated. With the release of new versions, it can be quickly translated into multiple languages. This also provides support for the popularity of jQuery. condition. jQuery is wrapped in syntax. jQuery supports CSS1-3 selectors and is compatible with IE 6.0+, FF 2+, Safari 3.0+, Opera 9.0+, Chrome and other browsers. At the same time, jQuery has about thousands of colorful plug-ins, a large number of interesting extensions and excellent community support, which makes up for jQuery's lack of features and provides jQuery with many very useful functional extensions. Coupled with its simplicity and ease of learning, jQuery has quickly become the most popular JavaScript library today and the preferred JavaScript library for developing less complex web applications such as websites. It has also been supported by large companies such as Microsoft and Google.

The most distinctive syntax feature of jQuery is the selector that is similar to CSS syntax, and it supports almost all selectors from CSS1 to CSS3 and is compatible with all mainstream browsers, which provides convenience for quick access to the DOM.

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