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console.timeLog

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.

Syntax

console.timeLog(label);

Parameters

label
The name of the timer to log to the console.

Return

If no label parameter included:

default: 1042ms

If an existing label is included:

timer name: 1242ms

Exceptions

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. 

Examples

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:

timerresult.png

Notice that the timer's name is displayed when the timer value is logged using timeLog() and again when it's stopped.

Specifications

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

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support No
No
See bug 854474.
No 62 No No No
No
See bug 186833.
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support No No No 62 ? No No

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/console/timeLog