Console.profile()

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Starts recording a performance profile (for example, the Firefox performance tool).

You can optionally supply an argument to name the profile and this then enables you to stop only that profile if multiple profiles being recorded. See Console.profileEnd() to see how this argument is interpreted.

To stop recording call Console.profileEnd().

Note: This feature is available in Web Workers.

Syntax

console.profile(profileName);

Parameters

profileName
The name to give the profile. Optional.

Browser compatibility

DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
profile
ExperimentalNon-standard
Chrome Full support 53Edge Full support 12Firefox Full support YesIE Full support YesOpera ? Safari ? WebView Android Full support 53Chrome Android Full support 53Firefox Android Full support 10Opera Android ? Safari iOS ? Samsung Internet Android Full support 6.0

Legend

Full support
Full support
Compatibility unknown
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.

See also