Limited availability
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The url read-only property of the PerformanceElementTiming interface returns the initial URL of the resource request when the element is an image.
A string which is the initial URL of the resources request for images or 0 for text.
url
In this example an <img> element is being observed by adding the elementtiming attribute. A PerformanceObserver is registered to get all performance entries of type "element" and the buffered flag is used to access data from before observer creation. Calling entry.url returns https://example.com/image.jpg.
<img
src="https://example.com/image.jpg"
alt="a nice image"
elementtiming="big-image"
id="myImage" />
const observer = new PerformanceObserver((list) => {
list.getEntries().forEach((entry) => {
if (entry.identifier === "big-image") {
console.log(entry.url);
}
});
});
observer.observe({ type: "element", buffered: true });
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HTML:
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UTF-8
| Version:
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