The format() method of Intl.NumberFormat instances formats a number according to the locale and formatting options of this Intl.NumberFormat object.

The propertyIsEnumerable() method of Object instances returns a boolean indicating whether the specified property is this object's enumerable own property.

The Math.log() static method returns the natural logarithm (base e) of a number. That is

The Math.max() static method returns the largest of the numbers given as input parameters, or -Infinity if there are no parameters.

The Math.min() static method returns the smallest of the numbers given as input parameters, or Infinity if there are no parameters.

The Math.random() static method returns a floating-point, pseudo-random number that's greater than or equal to 0 and less than 1, with approximately uniform distribution over that range — which you can then scale to your desired range. The implementation selects the initial seed to the random number generation algorithm; it cannot be chosen or reset by the user.

The trim() method of String values removes whitespace from both ends of this string and returns a new string, without modifying the original string.

The getDay() method of Date instances returns the day of the week for this date according to local time, where 0 represents Sunday. For the day of the month, see Date.prototype.getDate().

The getTime() method of Date instances returns the number of milliseconds for this date since the epoch, which is defined as the midnight at the beginning of January 1, 1970, UTC.

The setFullYear() method of Date instances changes the year, month, and/or day of month for this date according to local time.