---
title: devtools.panels.ElementsPanel
slug: Mozilla/Add-ons/WebExtensions/API/devtools/panels/ElementsPanel
tags:
  - API
  - Add-ons
  - DevTools
  - Extensions
  - Reference
  - WebExtensions
  - devtools.panels
  - devtools.panelsElementsPanel
translation_of: Mozilla/Add-ons/WebExtensions/API/devtools.panels/ElementsPanel
original_slug: Mozilla/Add-ons/WebExtensions/API/devtools.panels/ElementsPanel
---
{{AddonSidebar()}}

Un `ElementsPanel` représente l'inspecteur HTML/CSS dans la devtools du navigateur. C'est ce qu'on appelle l'inspecteur de page dans Firefox et le panneau Éléments de Chrome.

## Fonctions

- [`devtools.panels.ElementsPanel.createSidebarPane()`](/fr/Add-ons/WebExtensions/API/devtools.panels/ElementsPanel/createSidebarPane)
  - : Crée un volet dans la barre latérale de l'inspecteur.

## Evénements

- [`devtools.panels.ElementsPanel.onSelectionChanged`](/fr/Add-ons/WebExtensions/API/devtools.panels/ElementsPanel/onSelectionChanged)
  - : Appèle lorsque l'utilisateur sélectionne un élément différent dans la page, par exemple en utilisant l'élément de menu contextuel "inspect élément".

## Compatibilité du navigateur

{{Compat("webextensions.api.devtools.panels.ElementsPanel", 10)}}

{{WebExtExamples}}

> **Note :**
>
> Cette API est basée sur l'API Chromium [`chrome.devtools.panels`](https://developer.chrome.com/extensions/devtools_panels).

<div class="hidden"><pre>// Copyright 2015 The Chromium Authors. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//    * Redistributions of source code must retain the above copyright
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</pre></div>