Logs the current value of a timer that was previously started by calling console.time() to the console.

See Timers in the documentation for details and examples.

Note: This feature is available in Web Workers.




The name of the timer to log to the console.


If no label parameter included:

default: 1042ms

If an existing label is included:

timer name: 1242ms


If there is no running timer, timeLog() returns the warning:

Timer “default” doesn’t exist.

If a label parameter is included, but there is no corresponding timer:

 Timer “timer name” doesn’t exist. 


console.time("answer time");
alert("Click to continue");
console.timeLog("answer time");
alert("Do a bunch of other stuff...");
console.timeEnd("answer time");

The output from the example above shows the time taken by the user to dismiss the first alert box, followed by the time it took for the user to dismiss the second alert:


Notice that the timer's name is displayed when the timer value is logged using timeLog() and again when it's stopped. In addition, the call to timeEnd() has the additional information, "timer ended" to make it obvious that the timer is no longer tracking time.


Specification Status Comment
Console API
The definition of 'console.timeLog()' in that specification.
Living Standard Initial definition

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
timeLogChrome Full support 71Edge Full support 79Firefox Full support 62IE No support NoOpera Full support 60Safari Full support 13WebView Android Full support 71Chrome Android Full support 71Firefox Android Full support 62Opera Android Full support 50Safari iOS Full support 13Samsung Internet Android Full support 10.0


Full support  
Full support
No support  
No support

See also