The id
read-only property of the PerformanceElementTiming
interface returns the id
of the associated element.
Syntax
var id = PerformanceElementTiming.id;
Value
A DOMString
.
Examples
In this example calling entry.id
will log to the console myImage
, this being the id
of the image element.
<img src="image.jpg" alt="a nice image" elementtiming="big-image" id="myImage">
const observer = new PerformanceObserver((list) => {
let entries = list.getEntries().forEach(function (entry) {
if (entry.identifier === "big-image") {
console.log(entry.id);
}
});
});
observer.observe({ entryTypes: ["element"] });
This example uses the PerformanceObserver
interface to create a list of performance measurement events. In our case we observe the PerformanceEntry.entrytype
element
in order to use the PerformanceElementTiming
interface.
Specifications
Specification | Status | Comment |
---|---|---|
Unknown The definition of 'PerformanceElementTiming.id' in that specification. |
Unknown | Initial definition. |
Browser compatibility
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