We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Echekwara usoro a. Biko jụọ ajụjụ ọhụrụ ma ọ bụrụ na ị chọrọ enyemaka.

What is the expected navigation behavior of a 204 response to a form post.

  • 1 nzaghachinzaghachi
  • 0
  • 1 view
  • Nzaghachi ikpeazụ nke grimzecho

grimzecho
grimzecho
more options

According to Mozilla, the 204 No Content response "indicates that a request has succeeded but that the client doesn't need to navigate away from its current page".

However, when Firefox receives such a code in response to a status code, it triggers the `window.onbeforeunload` event and any associated handlers. This has side-effects such as closing any open websocket connections associated with the page, re-rendering the DOM (which fires various lifecycle methods in single page apps), and other similar activities that are generally associated with navigating away from a page.

Is this behavior intended or documented anywhere? Or should it be considered a bug?

According to Mozilla, the [https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/204 204 No Content] response "indicates that a request has succeeded but that the client doesn't need to navigate away from its current page". However, when Firefox receives such a code in response to a status code, it triggers the `window.onbeforeunload` event and any associated handlers. This has side-effects such as closing any open websocket connections associated with the page, re-rendering the DOM (which fires various lifecycle methods in single page apps), and other similar activities that are generally associated with navigating away from a page. Is this behavior intended or documented anywhere? Or should it be considered a bug?

All Replies (1)

grimzecho
grimzecho Jụọ onye nwe ya ajụjụ
more options

--edit-- There is a typo. The first sentence of the second paragraph should read: "However, when Firefox receives such a code in response to a form post, it triggers ..."