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

ChromeEdgeFirefoxFirefox for AndroidOpera
Basic Support (Yes) No56 No (Yes)

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,