Why JavaScript getTime() is not a function?

date, function, gettime, javascript

Solution

That's because your `dat1` and `dat2` variables are just strings.

You should parse them to get a `Date` object, for that format I always use the following function:

// parse a date in yyyy-mm-dd format
function parseDate(input) {
  var parts = input.match(/(\d+)/g);
  // new Date(year, month [, date [, hours[, minutes[, seconds[, ms]]]]])
  return new Date(parts[0], parts[1]-1, parts[2]); // months are 0-based
}

I use this function because the `Date.parse(string)` (or `new Date(string)`) method is implementation dependent, and the yyyy-MM-dd format will work on modern browser but not on IE, so I prefer doing it manually.

Problem

I used the following function: ``` function datediff() { var dat1 = document.getElementById('date1').value; alert(dat1);//i get 2010-04-01 var dat2 = document.getElementById('date2').value; alert(dat2);// i get 2010-04-13 var oneDay = 24*60*60*1000; // hours*minutes*seconds*milliseconds var diffDays = Math.abs((dat1.getTime() - dat2.getTime())/(oneDay)); alert(diffDays); } ``` I get the error: ``` dat1.getTime()` is not a function ```

Original source