Request

HTTP X-Requested-With Header

Identifies that the request was made with JavaScript (e.g., via XMLHttpRequest). Commonly used to distinguish AJAX requests from normal browser navigation.

Purpose

Allows servers to identify AJAX requests and apply different handling or security rules.

X-Requested-With: XMLHttpRequest Example: X-Requested-With: XMLHttpRequest

Code Examples

See how to use the X-Requested-With header in different tools and languages.

curl -H "X-Requested-With: XMLHttpRequest" https://api.example.com/data
# Some frameworks require this header for AJAX endpoints

Related Headers

Origin

Indicates where the request originates from. Used in CORS to determine if the server allows cross-origin requests.

Referer

Contains the address of the previous page from which the current page was requested. Used for analytics, logging, and cache optimization.

Content-Type

Indicates the media type (MIME type) of the resource being sent. Tells the client how to interpret the response body.

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HTTP Headers Reference

Complete reference of all HTTP request and response headers

x-requested-with headerhttp x-requested-withhttp headers guide