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JavaScript

Posted by Harry Beckwith
Harry Beckwith
13,452 Points

Javascript prompt question

Hi,

I am wondering if someone could solve this.

I am trying to compare two dates from the users input and then display the difference in an alert box.

** The code used has to be javascript. **

so it would be something like this:

The user clicks onto a button. The button asks 2 questions. First question asks the user for a date in dd-mm-yy format Another question appears after the input to ask for a second date, same format. The difference is then displayed in an alert box.

Hope someone can find a solution for this

Thank you,

Harry =)

rdaniels
rdaniels
27,258 Points

What is the format that you want returned? Number of days from one date to the next?

Harry Beckwith
Harry Beckwith
13,452 Points

Yes, its to work out the difference between two dates.

e.g 01/08/2012 compared to 01/11/2015

would return 3 years and 3 months.

1 Answer

Dan Johnson
Dan Johnson
9,385 Points
Dan Johnson
Dan Johnson
9,385 Points

Something like this should work and get you most of the way there.

var d1 = new Date(prompt('Enter Start Date (yyyy-mm-dd)'))
var d2 = new Date(prompt('Enter End Date (yyyy-mm-dd)'))

var timeDiff = Math.abs(d2.getTime() - d1.getTime());
var diffDays = Math.ceil(timeDiff / (1000 * 3600 * 24)); 

alert('There are ' + diffDays + ' between ' + d1 + ' and ' + d2);
Harry Beckwith
Harry Beckwith
13,452 Points

Hi Dan,

Thank you that was what i was looking for, works well!

I was having difficulty creating the math for problem.

Thanks again !