What\'s the main difference between:
dt = new Date();
ms = Date.parse(dt);
and
dt = new Date();
ms = dt.getTime();
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Date.parse(dt)
The parse function applies the ToString operator to its argument and interprets the resulting string as a date; it returns a number, the UTC time value corresponding to the date. The string may be interpreted as a local time, a UTC time, or a time in some other time zone, depending on the contents of the string.
getTime()
Returns the numeric value corresponding to the time for the specified date according to universal time.