The handler.isExtensible() method is a trap for the [[IsExtensible]] object internal method, which is used by operations such as Object.isExtensible().

The Reflect.isExtensible() static method is like Object.isExtensible(). It determines if an object is extensible (whether it can have new properties added to it).

The handler.apply() method is a trap for the [[Call]] object internal method, which is used by operations such as function calls.

The fileName data property of an Error instance contains the path to the file that raised this error.

The name data property of Error.prototype is shared by all Error instances. It represents the name for the type of error. For Error.prototype.name, the initial value is "Error". Subclasses like TypeError and SyntaxError provide their own name properties.

The setSeconds() method of Date instances changes the seconds and/or milliseconds for this date according to local time.

The isSubsetOf() method of Set instances takes a set and returns a boolean indicating if all elements of this set are in the given set.

The Date.UTC() static method accepts parameters representing the date and time components similar to the Date constructor, but treats them as UTC. It returns the number of milliseconds since January 1, 1970, 00:00:00 UTC.

The getMinutes() method of Date instances returns the minutes for this date according to local time.

The setUTCHours() method of Date instances changes the hours, minutes, seconds, and/or milliseconds for this date according to universal time.