How to inspect Firefox's UI?

2017年11月19日 — Once the toolbox is open, you can click on the mouse-inside-a-box icon in the upper-right of the toolbox, and then hover over the element you ...

2017年10月23日 — How do I identify Firefox UI elements? · Open the Browser Toolbox (CTRL + SHIFT + ALT + I) · Press the button with the 4 squares at the top ...

2022年7月30日 — Just open the browser toolbox and use the inspector tab like on Firefox UI like you would use web inspector on websites.

2021年12月10日 — First, click on the browser's menu > More Tools > Web Developer Tools. Then, when this menu opens, click on the three-dot element to the far ...

2020年12月7日 — Press F12 to open the Page Inspector. Alternate: Right click the page then Inspect Element (Q). Press F1 to open the Page Inspector Settings.

Reusable UI widgets¶. Background¶. Different Firefox surfaces make use of similar UI elements such as cards, menus, toggles, and message bars.

Web Components changes we made in Firefox as a result of using them in the UI · New feature: CSS Shadow Parts. · DevTools: Web Components support. · Performance ...

This article is a quick tour of the main sections of the Page Inspector's user interface. It covers the three top-level components of the Inspector's UI: the “ ...

2023年12月17日 — User interface. Extensions that use WebExtension APIs are provided with several user interface options so that their functionality can be made ...

2019年1月30日 — The browser toolbox is the only way to inspect elements from the user interface. It doesn't show CSS rules or selectors directly, but you can ...