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HomeWeb Front-endJS TutorialHow is Ajax different from JavaScript libraries and runtime environments?

Ajax 与 JavaScript 库和运行时环境有何不同?

The focus of this article will be on what AJAX is, how it works simply, what makes it such a convenient and powerful tool, and how it relates to JavaScript libraries and JavaScript runtime environments. What a difference.

AJAX Introduction and History

Ajax, short for Asynchronous JavaScript and XML, is a technology used to create dynamic and interactive web applications. It was first introduced in the early 2000s and has become a staple of modern web development ever since.

The key feature of Ajax is its ability to update parts of a web page without reloading the entire page. This is achieved by using JavaScript to asynchronously send and receive data from the server, meaning the page can continue to run while the data is loading. This provides a smoother, more responsive user experience.

Ajax was originally popularized by Google, which uses it in its Gmail and Google Maps applications. Other companies soon followed suit and started using Ajax in their own Web applications. Today, Ajax is used in a wide variety of web applications, from social media platforms to e-commerce websites.

In addition to its use in web applications, Ajax is also used in other areas such as mobile and desktop applications, and it has been used to create real-time applications such as chat applications and online games.

Overall, Ajax has had a significant impact on the way web applications are built and has played a key role in the development of the web.

How does AJAX work?

Here is a brief overview of how AJAX works -

  • Users interact with web pages, such as clicking buttons or submitting forms.

  • JavaScript on web pages uses the XMLHttpRequest object to send requests to the server. This request can be for new data, or to update or delete existing data.

  • The server processes the request and sends back a response, usually in the form of XML or JSON data.

  • JavaScript on the web page receives the response and uses it to dynamically update the page without reloading the entire page. This can include updating specific elements on the page or displaying new data.

  • Users do not need to refresh the entire page to see the updated page, making the experience more seamless and interactive.

  • AJAX is often used in conjunction with other technologies such as jQuery, ReactJS, and JSON, making it easier to implement and use in web development.

AJAX comparison. JavaScript library

AJAX and JavaScript libraries are both tools for web development, but they have different functions and purposes.

AJAX is a technology for creating dynamic, interactive web applications that allows web pages to communicate with the server without refreshing the entire page. This enables faster, smoother interactions such as updating content, submitting forms, and retrieving data.

On the other hand, JavaScript libraries are collections of pre-written JavaScript code that can be easily integrated into web projects. They are designed to simplify and speed up the development process by providing pre-built functionality and abstracting away complex code. Examples of popular JavaScript libraries include jQuery, React, and AngularJS.

In summary, AJAX is a technology for creating dynamic web applications, while JavaScript libraries are collections of pre-written code used to simplify the development process.

AJAX comparison. Runtime environment

As we discussed before, AJAX is a technology primarily used in web development to create dynamic, interactive web pages without the need to refresh the entire page while allowing data to be exchanged with the server in the background and allowing for faster speeds and More responsive web pages.

On the other hand, the runtime environment refers to the software and hardware used to execute programs. These environments include operating systems, virtual machines, and programming language runtimes. They provide necessary resources and services for the normal operation and execution of programs.

In short, AJAX is a technology used in web development to create dynamic web pages, while the runtime environment provides the necessary resources and services for the program to run and execute correctly. They are not directly related to each other, but they both play a vital role in the running of web applications.

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