onSelectionChanged 编辑

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

BCD tables only load in the browser

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 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);

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