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Every tool starts with an idea: “if I had this, then I could do that faster, better, or more easily.” The Firefox Developer Tools are built atop hundreds of those ideas, and many of them come from people in the web development community just like you. We collect those ideas ...
In a web page, every element is rendered as a rectangular box. The box model describes how the element’s content, padding, border, and margin determine the space occupied by the element and its relation to other elements in the page. Depending on the element’s display property, its box may be ...
Firefox OS is an operating system built on top of the Firefox web browser engine, which is called Gecko. A browser app on Firefox OS provides a user interface written with HTML5 technology and manages web page browsing using the Browser API. It also manages tabbing, browsing history, bookmarks, and ...
Firefox Nightly recently added preliminary support for Fetch, a modern, Promise-based replacement for XMLHttpRequest (XHR). Our initial work supported most of the Fetch Specification, but not quite all of it. Specifically, when Fetch first appeared in Nightly, we hadn’t yet implemented serializing and de-serializing of FormData objects. GitHub was already ...