Javascript: getDate() plus one if statement

Question

I am trying to build an if statement on javascript;

if (nextProcessingDate > today ) {
  //do something
}

nextProcessingDate is assigned a timestamp, i.e. 09/07/2014 12:10:17

I am using the following code to assign today's timestamp to today variable

/*script start*/

    var today = new Date();
    var dd = today.getDate();
    var mm = today.getMonth() + 1; //January is 0!
    var yyyy = today.getFullYear();

    var s = today.getSeconds();
    var m = today.getMinutes();
    var h = today.getHours();

    if (dd < 10) {
        dd = '0' + dd
    }

    if (mm < 10) {
        mm = '0' + mm
    }
    if (s < 10) {
        s = '0' + s
    }
    if (m < 10) {
        m = '0' + m
    }
    if (h < 10) {
        h = '0' + h
    }

    today = dd + '/' + mm + '/' + yyyy + ' ' + h + ':' + m + ':' + s;

/*script end*/

Now what I really want to do is "If nextprocessingDate is bigger than today plus One day then do something"

 if (nextProcessingDate > (today + 1){
   //do something
}

Thanks for your help, here is the fiddle link http://jsfiddle.net/E5vG4/1/

Update So, here is the updated fiddle which seems to work to some extend. http://jsfiddle.net/E5vG4/9/

The issue now is that it only returns true of the processingdate timestamp is equals or over 24hours from now, I need to test it for 09:30am which in this case it returns false.

Would stripping the time from the next processing date fix it somehow?

check this [How to compare two datetime in javascript?](http://stackoverflow.com/questions/20363764/how-to-compare-two-datetime-in-javascript) — Govind Singh, Jul 09 '14 at 12:19
Use `setDate`. Check this [link](http://stackoverflow.com/a/3818198/1374307) — Rohith, Jul 09 '14 at 12:23

rob · Accepted Answer · 2014-07-09T12:55:45.360

1

You definitely should not be using strings to compare dates.

You could try creating a Date object from nextProcessingDate then:

var nextProcessingDate  = '09/07/2014 12:10:17';
var d = Date.parse(nextProcessingDate);
if (d > (new Date().getTime() + (1000 * 60 * 60 * 24))) {
       alert("after");
} else {
       alert("before");
}

edited Jul 09 '14 at 12:55

answered Jul 09 '14 at 12:20

rob

1,286
11
12

If I change the nextProcessingDate to 08/07/2014 11:00:17 it still says after instead of before – David Garcia Jul 09 '14 at 13:04
See this fiddle http://jsfiddle.net/9w632/ - 08/07/2014 11:00:17 is Aug 07 2014 - i get after... – rob Jul 09 '14 at 13:13

score 1 · Answer 2 · answered Jul 09 '14 at 12:22

Date processing is a pain in JavaScript and writing your own solution is all sorts of tricky once you factor in periods crossing midnight, daylight saving changes and leap days.

I recommend selecting an established date processing library to do this kind of stuff.

I've been using moment.js and have found it to be pretty great.

Your code would become:

if(moment(nextProcessingDate).isAfter(moment(today).add('days',1))) {
  // do something
}

or, more succinctly:

if(moment('09/07/2014 14:05:17').isAfter(moment().add('days',1))) {
  // do something
}

Thanks Dan, I am afraid I can't use any libraries. – David Garcia Jul 09 '14 at 12:23 — David Garcia, Jul 09 '14 at 12:23

score 1 · Answer 3 · answered Jul 09 '14 at 12:24

1

today.setDate(today.getDate() + 1);

before var dd = today.getDate(); can make your Date appear one day after today.

Updated Fiddle

answered Jul 09 '14 at 12:24

Kawinesh S K

3,148
1
16
29

The issue now is that it only returns true of the processingdate timestamp is equals or over 24hours from now, I need to test it for 09:30am which in this case it returns false, I guess because is not a full day from now? – David Garcia Jul 09 '14 at 13:10

score 1 · Answer 4 · answered Jul 09 '14 at 12:38

 if (nextProcessingDate > (today + 1){
   //do something
}

Will just add a 1 after the seconds.

If you just want to check if an excisting timestamp is bigger than todays date + 1 day you should just do like what you did with the month. So if the day i 09, dd will become 10 insted.

So if I understood your question right, try this:

var dd = today.getDate() + 1;

Javascript: getDate() plus one if statement

4 Answers4