convert just the time of the Datetime to timestamp javascript code example

Example 1: convert date to timestamp javascript

//  human date --> timestamp

function toTimestamp(strDate){
   var datum = Date.parse(strDate);
   return datum/1000;
}
alert(toTimestamp('02/13/2009 23:31:30'));

Example 2: convert timestamp to date js

var date = new Date("2016-07-27T07:45:00Z");
However, you can run into trouble when you do not provide the timezone explicitly!