LayoutShiftAttribution: toJSON() method
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The toJSON()
method of the LayoutShiftAttribution
interface is a serializer that returns a JSON representation of the LayoutShiftAttribution
object.
Syntax
js
toJSON()
Parameters
None.
Return value
A JSON object that is the serialization of the LayoutShiftAttribution
object.
Examples
The following example prints a JSON representation of the first item in LayoutShift.sources
to the console.
js
new PerformanceObserver((list) => {
for (const { sources } of list.getEntries()) {
if (sources) {
console.log(sources[0].toJSON());
}
}
}).observe({ type: "layout-shift", buffered: true });
Specifications
Specification |
---|
Layout Instability # sec-layout-shift-attribution |
Browser compatibility
BCD tables only load in the browser