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In this article, the editor introduces in detail "what are the advantages and disadvantages of ajax". The content is detailed, the steps are clear, and the details are handled properly. I hope this article "what are the advantages and disadvantages of ajax" can help you solve your doubts.

Ajax's advantages are: 1, no refresh to update data, making Web applications respond to user interaction more quickly, which can reduce user waiting time and bring a very good user experience; 2, asynchronous communication with the server; 3, front-end and back-end load balance; 4, widely supported based on standards; 5, separation of interface and application, which is conducive to division of labor and cooperation, improve efficiency and so on.

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

Ajax is Asynchronous Javascript And XML (Asynchronous JavaScript and XML).

Ajax is a technology that can update parts of a web page without reloading the entire page.

Ajax is a technology for creating fast dynamic web pages. By exchanging a small amount of data with the server in the background. Ajax enables web pages to be updated asynchronously. This means that some part of the page can be updated without reloading the entire page. On the other hand, traditional web pages (without ajax) must reload the entire web page if they need to update content.

Advantages of ajax

1. No refresh to update data.

The biggest advantage of AJAX is that it can communicate with the server to maintain data without refreshing the entire page. This allows Web applications to respond to user interactions more quickly, avoids sending messages that have not changed on the network, reduces user wait time, and brings a very good user experience.

2. communicate with the server asynchronously.

AJAX communicates with the server asynchronously without interrupting the user's operation, so it has a more rapid response ability. Optimize the communication between Browser and Server, reduce unnecessary data transmission, time and reduce data flow on the network.

3. Front-end and back-end load balancing.

AJAX can transfer the work of some previous servers to the client, make use of the idle ability of the client to deal with it, reduce the burden of the server and bandwidth, and save space and broadband rental costs. And reduce the burden of the server, the principle of AJAX is "take data on demand", which can minimize the burden of redundant requests and responses on the server and improve the performance of the site.

4. It is widely supported based on standards.

Based on standardized and widely supported technology, AJAX does not need to download browser plug-ins or Mini Program, but requires customers to allow JavaScript to execute on the browser. With the maturity of Ajax, some libraries that simplify the use of Ajax have come out one after another. Similarly, another programming aid technology has emerged to provide alternative functionality for users who do not support JavaScript.

5. the interface is separated from the application.

Ajax separates the interface from the application in WEB (it can also be said to be the separation of data and presentation), which is conducive to division of labor, reduce WEB application errors caused by page modifications made by non-technical personnel, improve efficiency, and become more suitable for the current publishing system.

Although there are such advantages, there are always unsatisfactory places.

Shortcomings of AJAX

1. AJAX does not support mobile devices very well.

Some handheld devices (such as mobile phones, PDA, etc.) do not support Ajax very well, for example, when we open a website using Ajax technology on the browser of our mobile phone, it does not support it at present.

2. The support for search engine is weak.

The support for search engines is weak. If used improperly, AJAX will increase the flow of network data, thus reducing the performance of the entire system.

3. The security of AJAX.

AJAX technology not only brings a good user experience to users, but also brings new security threats to IT enterprises. Ajax technology is like establishing a direct channel to enterprise data. This allows developers to inadvertently expose more data and server logic than ever before. The logic of Ajax can be hidden from the client's security scanning technology, allowing hackers to establish new attacks from remote servers. It is also difficult for Ajax to avoid some known security vulnerabilities, such as cross-site footprint attacks, SQL injection attacks and Credentials-based security vulnerabilities.

4. No refresh overload of Ajax, because the change of the page is not as obvious as refresh overload, it is easy to cause trouble to the user-the user's experience has been updated when the user is not clear about the current data; the current solutions are the prompt in the relevant location, the obvious design of the data update area, the prompt to the user after the data update, and so on.

After reading this, the article "what are the advantages and disadvantages of ajax" has been introduced. If you want to master the knowledge points of this article, you still need to practice and use it yourself to understand it. If you want to know more about related articles, welcome to follow the industry information channel.

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