在此页

• 句法
• 参数
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

Starts a timer you can use to track how long an operation takes. You give each timer a unique name, and may have up to 10,000 timers running on a given page. When you call console.timeEnd() with the same name, the browser will output the time, in milliseconds, that elapsed since the timer was started.

见 计时器 在 console documentation for details and examples.

注意： 此特征可用于 Web 工作者 .

句法

console.time(label);
					

参数

label

The name to give the new timer. This will identify the timer; use the same name when calling console.timeEnd() to stop the timer and get the time output to the console.

规范

规范	状态	注释
控制台 API The definition of 'console.time()' in that specification.	实时标准	初始定义

浏览器兼容性

The compatibility table on 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
time	Chrome 1	Edge 12	Firefox 10	IE 11	Opera 11	Safari 4	WebView Android 1	Chrome Android 18	Firefox Android 10	Opera Android 11	Safari iOS 3.2	Samsung Internet Android 1.0

图例

完整支持

完整支持

另请参阅

• Console.timeEnd()
• Console.timeLog()
• Opera Dragonfly 文档编制：控制台

元数据

• 最后修改： May 5, 2019

相关话题

1. 控制台 API
2. 控制台
3. 方法

   1. assert()
   2. clear()
   3. count()
   4. countReset()
   5. debug()
   6. dir()
   7. dirxml()
   8. error()
   9. group()
   10. groupCollapsed()
   11. groupEnd()
   12. info()
   13. log()
   14. profile()
   15. profileEnd()
   16. table()
   17. time()
   18. timeEnd()
   19. timeLog()
   20. timeStamp()
   21. trace()
   22. warn()
4. 控制台 API 相关页面

   1. Window.console
   2. WorkerGlobalScope.console