在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

这是 实验性技术
检查 浏览器兼容性表格 要小心谨慎在生产中使用这之前。

toJSON() method is a serializer - it returns a JSON representation of the PerformanceNavigationTiming 对象。

句法

json = resourcePerfEntry.toJSON();
					

自变量

None

返回值

json

A JSON object that is the serialization of the PerformanceNavigationTiming 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("navigation");
var entry = perfEntries[0];
// Get the JSON and log it
var json = entry.toJSON();
var s = JSON.stringify(json);
console.log("PerformanceNavigationTiming.toJSON() = " + s);
					

规范

规范	状态	注释
Navigation Timing Level 2 The definition of 'toJSON()' in that specification.	工作草案	初始定义。

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 14, 2020

相关话题

1. 导航计时 API
2. PerformanceNavigationTiming
3. 特性

   1. domComplete
   2. domContentLoadedEventEnd
   3. domContentLoadedEventStart
   4. domInteractive
   5. loadEventEnd
   6. loadEventStart
   7. redirectCount
   8. type
   9. unloadEventEnd
   10. unloadEventStart
4. 方法

   1. toJSON()
5. 继承：

   1. PerformanceEntry
6. Related pages for Navigation Timing

   1. 性能
   2. PerformanceNavigation
   3. PerformanceTiming
   4. Window.performance