JS format date, calculate time difference

var startTime = "20170501"

var endTime = "20170430"

var pattern =/(\d{4}) (\d{2}) (\d{2})/;

var starttime_f = Starttime.replace (pattern, ' $1-$2-$3 ')

var endtime_f = Endtime.replace (pattern, ' $1-$2-$3 ')

Converted time format starttime_f= "2017-05-01" endtime_f= "2017-04-30"

var time1 = date.parse (new Date (Starttime_f));

var time2 = date.parse (new Date (Endtime_f));

var ndays = Math.Abs (parseint ((time2-time1)/1000/3600/24));

This article is from the "Programming" blog, so be sure to keep this source http://lizijun.blog.51cto.com/6392394/1927521

JS format date, calculate time difference