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Editorial Team
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Asked: 2026-05-25T01:04:15+00:00

I want to be able, using javascript, to reload the currently loaded resource, but

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I want to be able, using javascript, to reload the currently loaded resource, but customising some header variables, before doing so.

This method is needed/should be used in 2 real cases:

  1. As a way, to handle login via real HTTP-login, which means reloading the resource with attached authentication data
  2. To get different media-type representations of the same resource, which means modifying the accept header, before re-sending the request.

As I would need to leave any other header fields unchanged, as the browser would send it natively, I cannot simply construct my own XMLHttpRequest, using the document.URL value. Rather I would need to get hold of a XMLHttpRequest representation of the request, the browser sent for the current resource.

Is there a way to accomplish that in JS? Preferably using pure JS without any jQuery magic.

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1 Answer

  1. Editorial Team

    If it was loaded via GET, you can just create an XMLHttpRequest and use document.location.href as the URL.

    The browser will specify the usual cookie headers, so your request headers should be largely the same unless the GET changed cookies in non-idempotent ways.

    If the current resource was loaded via POST, then you are out of luck. The POST body of the current resource is not available to JavaScript so unless you would need some other way to get it or infer it from page content.

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