JavaScript – console.error() Method
The console.error() method writes an error message to the console, which can be useful for testing purposes.
JavaScript – console.group() Method
The console.group() method starts a message group, and all new messages will be written inside this group.
JavaScript – console.groupCollapsed() Method
The console.groupCollapsed() method starts a collapsed message group (which can be expanded), and all new messages will be inside this group.
JavaScript – console.groupEnd() Method
The console.groupEnd() method ends a console message group created with the console.group() method.
JavaScript – console.info() Method
The console.info() method writes a message to the browser console.
JavaScript – console.log() Method
The console.log() method logs a message to the browser console, which is useful for testing purposes.
JavaScript – console.trace() Method
The console.trace() method displays a trace that shows how the code ended up at a certain point.
JavaScript – console.time() Method
The console.time() method starts a timer in the console to time code for testing purposes.
JavaScript – Date constructor Property
The Date constructor property returns the function that created the Date prototype.
JavaScript – Date getDate() Method
The Date getDate() method returns the day of the month (1 to 31) of a Date object.
JavaScript – Date getDay() Method
The Date getDay() method returns the day of the week (0 to 6) of a Date object: Sunday = 0, Monday = 1, Tuesday = 2 … Saturday = 6.
JavaScript – console.timeEnd() Method
The console.timeEnd() method ends a timer in the console that was started with the console.time() method.
JavaScript – Date getHours() Method
The Date getHours() method returns the hour (0 to 23) of a Date object: 12am = 0, 1am = 1, 2am = 2 … 11pm = 23.
JavaScript – Date getMilliseconds() Method
The Date getMilliseconds() method returns the milliseconds (0 to 999) of a Date object.
JavaScript – Date getFullYear() Method
The Date getFullYear() method returns the full year (4 digits) of a Date object.
JavaScript – Date getMinutes() Method
The Date getMinutes() method returns the minutes (0 to 59) of a Date object.
JavaScript – Date getMonth() Method
The Date getMonth() method returns the month (0 to 11) of a Date object: January = 0, February = 1, March = 2 … December = 11.
JavaScript – Date getSeconds() Method
The Date getSeconds() method returns the seconds (0 to 59) of a Date object.