LayoutShift: sources property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The sources read-only property of the LayoutShift interface returns an array of LayoutShiftAttribution objects that indicate the DOM elements that moved during the layout shift.

Value

An Array of LayoutShiftAttribution objects. This array will not contain more than five sources. If there are more than five elements impacted by the layout shift, the five most impactful elements are reported.

Examples

Logging layout shift sources

js
const observer = new PerformanceObserver((list) => {
  list.getEntries().forEach((entry) => {
    entry.sources.forEach((source) => {
      console.log(source);
    });
  });
});

observer.observe({ type: "layout-shift", buffered: true });

Specifications

Specification
Layout Instability API
# dom-layoutshift-sources

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
sources
Experimental

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.

See also