LayoutShift: sources property

Limited availability

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

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

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

Specifications

Browser compatibility

See also

• LayoutShiftAttribution