How do I get current time on javascript?

Question

I have a method on visual studio code like this and when I run program, The program allows me to rent a product before the current time and I know new Date() method doesn't work on here how can I solve this?

 rent() {
        if (
          this.rentDate > this.returnDate ||
          this.rentDate <new Date()||
          !this.rentDate||
          !this.returnDate
        ) {
              this.toastrService.warning(
                  'Invalid dates'
              );
              return;
          }
}

How do you know that `new Date()` "doesn't work" there? Can you clarify? — Ian H., Jun 18 '21 at 07:55
Date.now() https://developer.mozilla.org/fr/docs/Web/JavaScript/Reference/Global_Objects/Date/now — Rudy David, Jun 18 '21 at 07:55
@IanH. because if it was be working it wouldn't let me to rent a product before the current time ? — Murat Akbyk, Jun 18 '21 at 07:59
But how do you know that exactly that is the issue? Have you tried debugging to see what the other values contain? — Ian H., Jun 18 '21 at 08:04
You need to show how `this.rentDate` and `this.returnDate` are formatted. There are multiple formats a "date" could exist in Javascript. Possible duplicate: https://stackoverflow.com/q/492994/6513921 — ruth, Jun 18 '21 at 08:05
@MuratAkbyk: Quickest way: Look into [`Date.getTime()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTime) and compare it with [`Date.now()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/now). — ruth, Jun 18 '21 at 08:12
@IanH. rentDate and returnDate are formatted as "Date" and when i try to rent after the returnDate it says invalid dates but when i try to rent before the current time it works — Murat Akbyk, Jun 18 '21 at 08:14
@MichaelD i tried to compare with `Date.getTime()` but it said i can't use < operator with date and number types — Murat Akbyk, Jun 18 '21 at 08:18
From the attached doc: "_The `getTime()` method returns the number of milliseconds* since the Unix Epoch_". So the comparison `this.rentTime.getTime() < Date.now()` would be a `number < number` comparison. Also note: I **DO NOT** if it take timezone offsets into account. — ruth, Jun 18 '21 at 08:21
@MichaelD I did what you said it didn't show any errors but it didn't work — Murat Akbyk, Jun 18 '21 at 08:34
@MuratAkbyk: Try to produce a minimal reproducible example. The data you've provided isn't enough to help. — ruth, Jun 18 '21 at 08:55
**never** use javaScript to get the date if you're planning use in a dbs. You need get the DateTime of the server (the date in a local computer can be any) — Eliseo, Jun 18 '21 at 11:35
`rentDate: Date` meas rentDate is the JavaScript Date object! — Salman A, Jun 18 '21 at 11:39

score 0 · Answer 1 · answered Jun 18 '21 at 09:44

0

Date.now() creates a timestamp of now

new Date() creates a new date object of when it was created. On this object you can use the date methods (getDay, getMonth etc) as documented here:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date

answered Jun 18 '21 at 09:44

James Trickey

1,322
13
21

i tried how it is here but this time my toastr didn't work – Murat Akbyk Jun 18 '21 at 10:00

score 0 · Answer 2 · answered Jun 18 '21 at 11:59

I solved the problem.

rentDate and returnDate were formatted as Date and i turned them into stringthen i write this code and it worked:

 if (
      Date.parse(this.rentDate) > Date.parse(this.returnDate) ||
      Date.parse(this.rentDate) <  Date.now()-86400000||
      !this.rentDate||
      !this.returnDate
   ) {
      this.toastrService.warning(
        "Invalid dates"
      );
      return;
    }

How do I get current time on javascript?

2 Answers2