PerformanceResourceTiming.toJSON() - Web APIs 编辑

The toJSON() method is a serializer that returns a JSON representation of the PerformanceResourceTiming object.

Syntax

json = resourcePerfEntry.toJSON();

Arguments

None

Return value

json

A JSON object that is the serialization of the PerformanceResourceTiming object as a map with entries from the closest inherited interface and with entries for each of the serializable attributes.

Example

// Get a resource performance entry
var perfEntries = performance.getEntriesByType("resource");
var entry = perfEntries[0];

// Get the JSON and log it
var json = entry.toJSON();
var s = JSON.stringify(json);
console.log("PerformanceEntry.toJSON = " + s);

Specifications

Browser compatibility

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