PerformanceElementTiming: naturalHeight property

{{APIRef("Performance API")}}{{SeeCompatTable}}

The naturalHeight read-only property of the {{domxref("PerformanceElementTiming")}} interface returns the intrinsic height of the image element.

Value

An unsigned 32-bit integer (unsigned long) which is the intrinsic height of the image if this is applied to an image, 0 for text.

Examples

Logging naturalHeight

In this example an {{HTMLElement("img")}} element is being observed by adding the elementtiming attribute. A {{domxref("PerformanceObserver")}} is registered to get all performance entries of type "element" and the buffered flag is used to access data from before observer creation. The image file has a width of 1000px and a height of 750px. Calling entry.naturalHeight returns 750, that being the intrinsic height in pixels.

const observer = new PerformanceObserver((list) => {
  list.getEntries().forEach((entry) => {
    if (entry.identifier === "big-image") {
      console.log(entry.naturalHeight);
    }
  });
});
observer.observe({ type: "element", buffered: true });

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}