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Editor to share with you what is the use of the javascript framework, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to understand it!

Javascript framework refers to the programming framework based on Javascript language, which is a set of tools and functions that can easily generate cross-browser compatible JavaScript code; using JavaScript framework, it is easier to write code to retrieve, traverse and manipulate DOM elements.

The operating environment of this tutorial: windows7 system, javascript1.8.5 version, Dell G3 computer.

What is the JavaScript framework?

JavaScript itself is a powerful language, and you don't need an additional framework to create rich Internet applications (RIA). However, using JavaScript is not an easy task, mainly due to the complexity of supporting multiple Web browsers. Like HTML and CSS, different browsers have different JavaScript implementations. Making JavaScript code cross-browser compatible is a nightmare.

Javascript framework refers to the programming framework based on Javascript language. The JavaScript framework or library is a set of tools and functions that can easily generate cross-browser compatible JavaScript code. Each library has been reliably tested on modern versions of many popular Web browsers, so you can safely use these frameworks, and your JavaScript-based RIA will work in a similar way on different browsers and platforms.

In addition to solving cross-browser problems, using the JavaScript framework makes it easier to write code that retrieves, traverses, and manipulates DOM elements. They not only provide shortcut functions to get references to DOM elements, but also allow DOM traversal functions to find parent, child, and sibling elements of any depth in a daisy chain (daisy-chaining). Finally, the framework provides a series of functions to make it easier to manipulate these objects, to change, add, or delete the content itself, or to use CSS style classes to change the appearance of elements.

Another important feature of the framework is its improved event handling support. Because different browsers have different implementations, cross-browser event handling can be very difficult. Therefore, JavaScript frameworks typically encapsulate browser events and provide a useful set of cross-browser compatible functions to handle. Some frameworks also provide a set of standard keyboard codes to represent keyboard-based events (such as pressing the Escape key, Return key, cursor key, and so on).

All of these features are very useful, but there is one feature of the JavaScript framework that is important to its recent popularity-support for Ajax. Like many other aspects of JavaScript, each Web browser tends to support Ajax in a different way, which makes it complicated to deal with Ajax in a way that is supported in all Web browsers. Almost all JavaScript frameworks include some form of Ajax library support, usually providing Ajax request and response objects, as well as helper functions (helper) for evaluating responses, updating DOM elements, and querying specific requests.

Typical characteristics of JavaScript framework

Now, let's take a look at the useful features that most JavaScript frameworks have. These include:

1. Selector (Selector)

2.DOM ergodic

3.DOM operation

4. Practical (Utility) function

5. Event handling Ajax

In explaining each feature, I will use one or more of the following JavaScript frameworks to illustrate: Prototype, jQuery, YUI, ExtJS, and MooTools. Although the implementation and syntax of each framework are different, the concepts are the same. Each framework has a detailed API reference to help you understand how to use the features in that particular library.

The above is all the content of the article "what's the use of javascript Framework?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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