What is the simplest way to pare two dates neglecting the timestamps. I have got two dates firstDate ing from the database (converted into javascript date) and secondDate ing from a date picker input field.
Essentially for my algorithm these two dates are equal as it doesn't take timestamp into consideration but the code won't consider it equal as firstDate has 01:00:00 in it.
How to pletely discard the timestamp for parison?

firstDate:

Tue Mar 24 1992 01:00:00 GMT-0500 (Central Daylight Time)

secondDate:

Tue Mar 24 1992 00:00:00 GMT-0500 (Central Daylight Time)

Code:

   if(firstDate < secondDate) {

        alert("This alert shouldn't pop out as dates are equal");
    }

What is the simplest way to pare two dates neglecting the timestamps. I have got two dates firstDate ing from the database (converted into javascript date) and secondDate ing from a date picker input field.
Essentially for my algorithm these two dates are equal as it doesn't take timestamp into consideration but the code won't consider it equal as firstDate has 01:00:00 in it.
How to pletely discard the timestamp for parison?

firstDate:

Tue Mar 24 1992 01:00:00 GMT-0500 (Central Daylight Time)

secondDate:

Tue Mar 24 1992 00:00:00 GMT-0500 (Central Daylight Time)

Code:

   if(firstDate < secondDate) {

        alert("This alert shouldn't pop out as dates are equal");
    }

• javascript
• html

3 Answers 3

You could use toDateString to get rid of the the time, and reassign that to the firstDate and secondDate variables. There might be a better way, but this is what came to mind for me.

firstDate = new Date(firstDate.toDateString());
secondDate = new Date(secondDate.toDateString());
if(firstDate < secondDate){
    alert("This alert shouldn't pop out as dates are equal");
}

Also, you'll want to make sure you're paring the values of the dates, and not checking if they're the same object when you pare if they're equal. So something like.

firstDate.valueOf() == secondDate.valueOf()

You can also check out my JSFiddle example.

Use the Date.setHours(hrs, mins, secs, ms) function with all zero arguments to set the time of day to midnight in both dates (make a copy if you need the date with the time for other purposes).

Derek's answer is correct. An alternative method without creating new date instances is to create RFC3339 date strings.

var firstDateStr = firstDate.toISOString().slice(0, 10);
var secondDateStr = secondDate.toISOString().slice(0, 10);

return (firstDateStr < secondDateStr);