How to Check Between Two Dates in a Month?

Question

How do I go about checking between two dates in a current month?

For example, I want to check between the 1st of January and the 8th of January regardless of year (I'm British so my dates are (dd/mm/yyyy):

var date = new Date(); //This is the current date

date1 = new Date('01, 01, date.getFullYear()');
date2 = new Date('08, 01, date.getFullYear()');

if(date >= date1 && date <= date2) {
// Do Something
} else {
// Don't do something
}

Or another example, let's say Halloween:

var date = new Date();

date1 = new Date('31, date.getMonth(), date.getFullYear()');

if(date == date1) {
// Do Something
} else {
// Don't do something
}

I'm not quite sure how to format it in Javascript, any help would be greatly appreciated!

Answer 1

You are initializing your Date objects incorrectly. If you want to initialize a date with a string, that string needs to have a format that can be processed by Date.parse.

The string you are passing, however, looks like you actually don't want to pass any strings at all. So just omit the single quotes, like this:

var date1 = new Date(date.getFullYear(), 0, 1);

Note that the first argument is the year, the second is the month (zero-based, so 0 is January) and the third is the day of the month.

Answer 2

A few points...

• new Date parameters are (year, month, day) regardless of your local settings.
• The single quotes around the parameters aren't correct syntax.
• Months in JavaScript are zero-indexed, so January is zero.

So your date2 should be date2 = new Date(date.getFullYear(), 0, 8).

Also get in the habit of putting var in front of variable declarations. Don't worry why just yet; you'll learn about that as you go.

So your code should go something like this:

var date = new Date();

var date1 = new Date(date.getFullYear(), 0, 1);
var date2 = new Date(date.getFullYear(), 0, 8);

if(date >= date1 && date <= date2) {
    // this part was correct :)
    //Do Something
}