LayoutShiftAttribution: toJSON() method
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
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 API # sec-layout-shift-attribution |
Browser compatibility
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toJSON
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Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.