在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

toJSON() method is a serializer that returns a JSON representation of the PerformanceResourceTiming 对象。

句法

json = resourcePerfEntry.toJSON();
					

自变量

None

返回值

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.

范例

// 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);
					

规范

规范	状态	注释
Resource Timing Level 2 The definition of 'toJSON' in that specification.	工作草案

浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
toJSON	Chrome 43	Edge ≤18	Firefox 40	IE No	Opera 30	Safari 11	WebView Android 43	Chrome Android 43	Firefox Android 42	Opera Android 30	Safari iOS 11	Samsung Internet Android 4.0

图例

完整支持

完整支持

不支持

不支持

元数据

• 最后修改： Jan 26, 2020

相关话题

1. 资源计时 API
2. PerformanceResourceTiming
3. 特性

   1. connectEnd
   2. connectStart
   3. decodedBodySize
   4. domainLookupEnd
   5. domainLookupStart
   6. encodedBodySize
   7. fetchStart
   8. initiatorType
   9. nextHopProtocol
   10. redirectEnd
   11. redirectStart
   12. requestStart
   13. responseEnd
   14. responseStart
   15. secureConnectionStart
   16. serverTiming
   17. transferSize
   18. workerStart
4. 方法

   1. toJSON()
5. 继承：

   1. PerformanceEntry
6. Related pages for Resource Timing API

   1. 性能
   2. PerformanceEntry
   3. Window.performance