Javascript: how to check if a timestamp belongs to the current day?

Question

I am trying to know if a certain timestamp belongs to today, but I'm getting lost in Javascripts date management.

Is there any way to check if a timestampo belongs to the current day?

Answer 1

Simple check 1st timestamp of both days and compare them.

var ts = 1564398205000
var today = new Date().setHours(0, 0, 0, 0);
var thatDay = new Date(ts).setHours(0, 0, 0, 0);

if(today === thatDay){
    console.log("*** Same day ***");
}

Answer 2

It seems nasty-ish to me however you could do something similar to:

function isInToday(inputDate)
{
  var today = new Date();
  if(today.setHours(0,0,0,0) == inputDate.setHours(0,0,0,0){ return true; }
  else { return false; }  
}

This assumes you've already set your input date as a JS date. This will check if the two dates occur on the same day, and return true if so and false if not.

I'm sure someone will come along with a neater way to do this or a case where this fails but as far as I can see this should do the trick for you.