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 include but there is not 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.


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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support No1 No62 No No No2
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No No No62 ? No No

1. See bug 854474.

2. See bug 186833.

See also

Document Tags and Contributors

Contributors to this page: irenesmith, chrisdavidmills
Last updated by: irenesmith,