LargestContentfulPaint.toJSON()
The toJSON()
method of the LargestContentfulPaint
interface is a serializer, and returns a JSON representation of the LargestContentfulPaint
object.
Syntax
LargestContentfulPaint.toJSON();
Parameters
None.
Return value
A JSON object that is the serialization of the LargestContentfulPaint
object.
Examples
The following example gets the LargestContentfulPaint
object and prints it as JSON to the console.
try {
let lcp;
const po = new PerformanceObserver((entryList) => {
const entries = entryList.getEntries();
const lastEntry = entries[entries.length - 1];
console.log(lastEntry.toJSON());
});
po.observe({type: 'largest-contentful-paint', buffered: true});
} catch (e) {
// Do nothing if the browser doesn't support this API.
}
Specifications
Specification |
---|
Unknown specification # dom-largestcontentfulpaint-tojson |
Browser compatibility
BCD tables only load in the browser