Is jQuery obsolete?

jQuery is not outdated and is constantly being optimized. jQuery is a fast and concise JavaScript framework. It encapsulates commonly used functional codes in JavaScript, provides a simple DOM operation, and optimizes HTML document operations and events. Processing, animation design and Ajax interaction.

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 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.

jQuery features

Quickly obtain document elements

jQuery’s selection mechanism is built on the Css selector, which provides fast query of the DOM The ability of elements in the document, 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, Dynamic special effects such as element removal.

Create AJAX non-refresh web pages

AJAX is the abbreviation of asynchronous JavaScript and XML, which can develop very sensitive non-refresh web pages, especially when developing server-side web pages, such as PHP websites, it is necessary 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 from adding too much event handling code in HTML. Most importantly, its event handler eliminates Fixed 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.

Recommended tutorial: "JS Tutorial"

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