CODEWITHSUNDEEP
javascriptjquery
CLiown
CLiown

Reputation: 13843

Calculating the amount of time passed between 2 dates

I've written some JavaScript to calculate the difference between two dates, from a twitter stream, and then equate that to a specific value - such as 'Seconds ago', 'x days ago'.....

I've created a Fiddle here that demonstrates what I've done: http://jsfiddle.net/meAEe/3/

However the result is always equal to '0 days ago'.

Can anyone help me figure out why?

Upvotes: 0

Views: 186

Answers (6)

Robin Michael Poothurai
Robin Michael Poothurai

Reputation: 5664

Your code is working fine. If you look into your code

                    var rightNow = new Date("Wed, 21 Dec 2011 13:05:09 +0000");
                var then = new Date("Tue, 20 Dec 2011 19:05:09 +0000");

difference is less than 24 hrs and giving 0 days.

I have put 

var then = new Date("Mon, 19 Dec 2011 19:05:09 +0000");

It given 1 day ago

Upvotes: 1

Some Guy
Some Guy

Reputation: 16210

That's because you do this: Math.floor(diff / day); The result of diff / day is 0.75. If you round that down, it's 0. If you change the date, you'll see that your code works just fine.

Upvotes: 0

Deleteman
Deleteman

Reputation: 8690

Aside from some programming details, your problem lies in using Math.floor function.

According to: http://www.w3schools.com/jsref/jsref_floor.asp

Math.floor actually returns the nearest integer, which in this case is 0, because the results is 0.75.

Upvotes: 0

Guffa
Guffa

Reputation: 700342

You need an else between every if statement.

Right now it will go into every if statement following the first that matches. If the time is less than an hour it's also less than two hours, less than a day, less than two days, and less than a year. Each one will replace the previous one, so you only see the last one.

Upvotes: 2

Viruzzo
Viruzzo

Reputation: 3025

You need to chage the ifs to else ifs (except the first one, of course). Right now they are all evaluated every time.

Upvotes: 0

a'r
a'r

Reputation: 36999

You have a logic error in your code. The last if statement will always execute because you have not connected your if statements using else if, which will result in the program execution dropping out once one of the conditions matches.

Upvotes: 1

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