tabs.onHighlighted

Fired when the set of highlighted tabs in a window changes.

Firefox doesn't have the concept of highlighting multiple tabs, and so in Firefox highlighting is just an alias for tab activation. So this event will fire only when the active tab in a window changes, and the tabIds property of highlightInfo will always be an array of length one, with the tabId referring to the active tab.

Syntax

chrome.tabs.onHighlighted.addListener(function(
  highlightInfo // object
) {...})
chrome.tabs.onHighlighted.removeListener(listener)
chrome.tabs.onHighlighted.hasListener(listener)

This API is also available as browser.tabs.onHighlighted.*.

Events have three functions:

addListener(callback)

Adds a listener to this event.

removeListener(listener)

Stop listening to this event. The listener argument is the listener to remove.

hasListener(listener)

Check whether listener is registered for this event. Returns true if it is listening, false otherwise.

addListener syntax

Parameters

callback

Function that will be called when this event occurs. The function will be passed the following arguments:

highlightInfo

object. ID(s) of the highlighted tabs, and ID of their window.

Additional objects

highlightInfo

windowId

integer. ID of the window whose tabs changed.

tabIds

array of integer. IDs of the highlighted tabs in the window.

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Examples

Listen for highlighting events, and log the IDs of highlighted tabs:

function handleHighlighted(highlightInfo) {
  console.log("Highlighted tabs: " + highlightInfo.tabIds);
}

chrome.tabs.onHighlighted.addListener(handleHighlighted);

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