onSelectionChanged

Fires when the user selects a different page element for inspection with the browser's developer tools, for example by selecting the "Inspect Element" context menu item in Firefox.

Syntax

browser.devtools.panels.elements.onSelectionChanged.addListener(listener)
browser.devtools.panels.elements.onSelectionChanged.removeListener(listener)
browser.devtools.panels.elements.onSelectionChanged.hasListener(listener)

Events have three functions:

addListener(listener)
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 no arguments.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxOperaFirefox for Android
Basic supportChrome Full support YesEdge No support NoFirefox Full support 56Opera Full support YesFirefox Android No support No

Legend

Full support  
Full support
No support  
No support

Examples

Listen for selection changed events, and log the text content of the newly selected element:

function handleSelectedElement() {
  browser.devtools.inspectedWindow.eval("$0.textContent")
    .then((result) => {
      console.log(result[0]);
    });
}

browser.devtools.panels.elements.onSelectionChanged.addListener(handleSelectedElement);

Acknowledgements

This API is based on Chromium's chrome.devtools API.

Document Tags and Contributors

Contributors to this page: wbamberg, hellosct1
Last updated by: wbamberg,