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Difference Between JSON and AJAX

Difference Between JSON and XML

Last Updated : 02 Dec, 2024

JSON (JavaScript Object Notation) and XML (Extensible Markup Language) are both formats used for structuring and exchanging data. JSON uses Key Value Structure and XML uses Tag based Structure to make platform independent formats.

JSON (JavaScript Object Notation)

JSON has a straightforward syntax with key-value pairs, making it easy to read and write for humans. JSON is lightweight compared to XML, resulting in faster parsing and smaller data payloads.

JavaScript

{"Geeks":[      { "firstName":"Vivek", "lastName":"Kothari" },      { "firstName":"Suraj", "lastName":"Kumar" },      { "firstName":"John", "lastName":"Smith" },      { "firstName":"Peter", "lastName":"Gregory" }  ]}

XML (Extensible Markup Language)

XML is highly extensible, allowing developers to define custom tags and structures suited to specific needs. Strong support for XML Schema Definition (XSD), enabling rigorous validation and data integrity checks.

XML

<Geeks>      <Geek>          <firstName>Vivek</firstName> <lastName>Kothari</lastName>      </Geek>      <Geek>          <firstName>Suraj</firstName> <lastName>Kumar</lastName>      </Geek>      <Geek>          <firstName>John</firstName> <lastName>Smith</lastName>      </Geek>      <Geek>          <firstName>Peter</firstName> <lastName>Gregory</lastName>      </Geek>  </Geeks>

Difference Between JSON and XML

JSON	XML
It is JavaScript Object Notation	It is Extensible markup language
It is based on JavaScript language.	It is derived from SGML.
It is a way of representing objects.	It is a markup language and uses tag structure to represent data items.
It does not provides any support for namespaces.	It supports namespaces.
It supports array.	It doesn’t supports array.
Its files are very easy to read as compared to XML.	Its documents are comparatively difficult to read and interpret.
It doesn’t use end tag.	It has start and end tags.
It is less secured.	It is more secured than JSON.
It doesn’t supports comments.	It supports comments.
It supports only UTF-8 encoding.	It supports various encoding.

When to Use JSON vs XML

Use JSON when:

Efficiency and simplicity are priorities.
You’re building modern web applications or APIs.

Use XML when:

You need robust validation or extensibility.
Working with legacy systems or document-based workflows.

Difference Between JSON and AJAX

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