Исследуйте, редактируйте и отлаживайте HTML, CSS и JavaScript на компьютерах и мобильных устройствах. Для получения последних обновлений для инструментов разработки скачайте Firefox Developer Edition.
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Основные инструменты
Инспектор страницы
Инструмент для просмотра и редактирования содержимого и макета страницы. Позволяет рассмотреть страницу с разных точек зрения, включая блочную модель, анимацию и grid компоновку.
Web консоль
Позволяет просматривать отладочные сообщения страницы и взаимодействовать с ней посредством JavaScript.
Отладчик JavaScript
Позволяет остановить, выполнять по шагам, исследовать и изменять JavaScript код выполняемый на странице.
Монитор сетевой активности
Показывает сетевые запросы возникающие в процессе загрузки страницы.
Performance Tools
Позволяет провести общий анализ отзывчивости вашего сайта, а также производительности JavaScript кода и макета.
Режим адаптивного дизайна
Позволяет увидеть, как будут выглядеть и работать ваши сайты или приложения на различных устройствах или типах сетей.
More Tools
These developer tools are also built into Firefox. Unlike the "Core Tools" above, you might not use them every day.
- Memory
- Figure out which objects are keeping memory in use.
- Storage Inspector
- Inspect cookies, local storage, indexedDB, and session storage present in a page.
- DOM Property Viewer
- Inspect the page's DOM properties, functions, etc.
- Developer Toolbar
- A command-line interface for the developer tools.
- Eyedropper
- Select a color from the page.
- Scratchpad
- A text editor built into Firefox that lets you write and execute JavaScript.
- Style Editor
- View and edit CSS styles for the current page.
- Shader Editor
- View and edit the vertex and fragment shaders used by WebGL.
- Web Audio Editor
- Examine the graph of audio nodes in an audio context, and modify their parameters.
- Taking screenshots
- Take a screenshot of the entire page or of a single element.
Connecting the Developer Tools
If you open the developer tools using keyboard shortcuts or the equivalent menu items, they'll target the document hosted by the currently active tab. But you can attach the tools to a variety of other targets, too, both within the current browser and in different browsers or even different devices.
- about:debugging
- Debug add-ons, content tabs, and workers running in the browser.
- Connecting to Firefox for Android
- Connect the developer tools to an instance of Firefox running on an Android device.
- Connecting to iframes
- Connect the developer tools to a specific iframe in the current page.
- Connecting to other browsers
- Connect the developer tools to Chrome on Android and Safari on iOS.
Debugging the browser
By default, the developer tools are attached to a web page or web app. But you can also connect them to the browser as a whole. This is useful for browser and add-on development.
- Browser Console
- See messages logged by the browser itself and by add-ons, and run JavaScript code in the browser's scope.
- Browser Toolbox
- Attach the Developer Tools to the browser itself.
Extending the devtools
The developer tools are designed to be extensible. Firefox add-ons can access the developer tools and the components they use to extend existing tools and add new tools. With the remote debugging protocol, you can implement your own debugging clients and servers, enabling you to debug websites using your own tools or to debug different targets using the Firefox tools.
- Example devtools add-ons
- Use these examples to understand how to implement a devtools add-on.
- Add a new panel to the devtools
- Write an add-on that adds a new panel to the Toolbox.
- Remote Debugging Protocol
- The protocol used to connect the Firefox Developer Tools to a debugging target like an instance of Firefox or a Firefox OS device.
- Source Editor
- A code editor built into Firefox that can be embedded in your add-on.
- The
DebuggerInterface - An API that lets JavaScript code observe the execution of other JavaScript code. The Firefox Developer Tools use this API to implement the JavaScript debugger.
- Web Console custom output
- How to extend and customize the output of the Web Console and the Browser Console.
Contribute
If you want to help to improve the developer tools, these resources will get you started.
- Get Involved
- Mozilla wiki page explaining how to get involved.
- firefox-dev.tools
- A tool helping to find bugs to work on.
Присоединяйтесь к сообществу Developer tools
- IRC: #devtools (Узнать больше)
- Team info: Dev tools wiki
- Blog: Hacks blog