Starts recording profile information under the optional title provided. This command is equivalent to clicking the Start profiling button on the F12 developer tools Profile tab.
Note This method is removed in Microsoft Edge.
var retVal = Console.profile(reportName);
The title of the report you want to appear in the
retVal [out, retval]
Reports cannot be nested. You need to stop the current profile or call profileEnd before starting another profiling session.