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Editor to share with you what are the external data formats in Ajax, 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 know it!

HTML

Advantages: HTML fragments require only a small amount of work to implement. External data in this format can be loaded and inserted into the page in a simple way without even using a callback function. There is no need to traverse the data.

Disadvantages: poor reusability, external files must be closely integrated with their target container.

JavaScript

JavaScript files provide a great deal of flexibility, but it is not a true data storage mechanism.

Json

Pros: the structure of the Json file makes it easy to reuse. And they are very concise, easy to read and fast to read.

Cons: errors in Json files can cause scripts on the page to stop running silently and even have other negative effects, so this kind of data must be carefully constructed by trusted people.

XML

Pros: the portability of XML documents is a well-deserved king, and XML has become the "Esperanto" of Web services. Xpath, dtd and so on all add a lot of color to it, and can effectively verify the format.

Disadvantages: files in XML format are relatively large and slow to parse and manipulate them.

Summary

Through the analysis of the advantages and disadvantages of the above various data formats, we know that it is generally the easiest to provide external data in HTML fragments without the need to share data with other applications. If data needs to be reused, and other applications may be affected by it, Json, which has advantages in terms of performance and file size, is usually a good choice. When the remote application is unknown, XML provides the most reliable guarantee for good interoperability.

The above is all the contents of the article "what are the external data formats in Ajax?" 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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