Gets the time value in milliseconds.
dateObj reference is a
Returns the number of milliseconds between midnight, January 1, 1970 and the time value in the
Date object. The range of dates is approximately 285,616 years from either side of midnight, January 1, 1970. Negative numbers indicate dates prior to 1970.
When doing multiple date and time calculations, you may want to define variables equal to the number of milliseconds in a day, hour, or minute. For example:
var minute = 1000 * 60; var hour = minute * 60; var day = hour * 24;
The following example shows how to use the
var minute = 1000 * 60; var hour = minute * 60; var day = hour * 24; date = new Date("1/1/2001"); var time = date.getTime(); document.write(Math.round(time / day) + " days from 1/1/1970 to 1/1/2001"); // Output: 11323 days from 1/1/1970 to 1/1/2001
Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported in Store apps (Windows 8 and Windows Phone 8.1). See Version Information.
Applies To: Date Object