---
title: devtools.inspectedWindow.tabId
slug: Mozilla/Add-ons/WebExtensions/API/devtools/inspectedWindow/tabId
tags:
  - API
  - Add-ons
  - Extensions
  - Reference
  - WebExtensions
  - devtools.inpectedWindow
  - tabId
translation_of: Mozilla/Add-ons/WebExtensions/API/devtools.inspectedWindow/tabId
original_slug: Mozilla/Add-ons/WebExtensions/API/devtools.inspectedWindow/tabId
---
{{AddonSidebar()}}

L'ID de {{WebExtAPIRef("tabs.Tab", "tab")}} est que cette instance des devtools est jointe, représenté comme un nombre.

Cela peut être envoyé à la page de fond de l'extension, de sorte que la page d'arrière plan peut utiliser l'API {{WebExtAPIRef("tabs")}} pour interargir avec l'onglet :

```js
// devtools-panel.js

const scriptToAttach = "document.body.innerHTML = 'Hi from the devtools';";

attachContentScriptButton.addEventListener("click", () => {
  browser.runtime.sendMessage({
    tabId: browser.devtools.inspectedWindow.tabId,
    script: scriptToAttach
  });
});
```

```js
// background.js

function handleMessage(request, sender, sendResponse) {
  browser.tabs.executeScript(request.tabId, {
    code: request.script
  });
}

browser.runtime.onMessage.addListener(handleMessage);
```

## Compatibilité du navigateur

{{Compat("webextensions.api.devtools.inspectedWindow.tabId")}}

{{WebExtExamples}}

> **Note :**
>
> Cette API est basée sur l'API Chromium [`chrome.devtools`](https://developer.chrome.com/extensions/devtools).
>
> Les données de compatibilité relatives à Microsoft Edge sont fournies par Microsoft Corporation et incluses ici sous la licence Creative Commons Attribution 3.0 pour les États-Unis.

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