# Rails "clock" and Javascript "clock" seconds apart **URL:** \ **Category:** Rails\ **Created:** [June 20, 2008, 9:44pm UTC](https://www.ruby-forum.com/t/rails-clock-and-javascript-clock-seconds-apart/141027 "2008-06-20T21:44:10Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![dezrtdude](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f4b2a3/32.png) [@dezrtdude](https://www.ruby-forum.com/u/dezrtdude)\ **Post date:** [June 20, 2008, 9:44pm UTC](https://www.ruby-forum.com/t/rails-clock-and-javascript-clock-seconds-apart/141027/1 "2008-06-20T21:44:10Z")
Hi All, I’m having a bit of an issue with time in my application. I’d be inclined to think that it was simply a machine time issue, but, as I’ve run the application on multiple machines, I’m not so sure. Basically, my rails “current time” and my javascript “current time” are anywhere from 3 to 6 seconds apart. Is there any way for me to resolve this? I suppose I could get a capture of each and add or subtract one from the other, but the trouble is that I’m using a timer, and the logic to ensure that the value doesn’t re-change after the initial setting could get out of hand. Are there perhaps any “static var” additions to Javascript? Thanks in advance for any suggestions. ---
**Author:** ![dezrtdude](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f4b2a3/32.png) [@dezrtdude](https://www.ruby-forum.com/u/dezrtdude)\ **Post date:** [June 20, 2008, 10:07pm UTC](https://www.ruby-forum.com/t/rails-clock-and-javascript-clock-seconds-apart/141027/2 "2008-06-20T22:07:52Z")
On Fri, 20 Jun 2008, gberz3 wrote: > ensure that the value doesn’t re-change after the initial setting > could get out of hand. Are there perhaps any “static var” additions > to Javascript? Do you really expect your browser and the remote server clocks to be exactly in sync? – A ---
**Author:** ![dezrtdude](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f4b2a3/32.png) [@dezrtdude](https://www.ruby-forum.com/u/dezrtdude)\ **Post date:** [June 21, 2008, 3:17am UTC](https://www.ruby-forum.com/t/rails-clock-and-javascript-clock-seconds-apart/141027/3 "2008-06-21T03:17:36Z")
Yes, if they’re running on the same system. In a distributed system, not at all, but it would be nice if it were _consistently_ out of sync. Ya know? Still I need a mechanism to right the wrong. Thoughts? ---
**Author:** ![dezrtdude](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f4b2a3/32.png) [@dezrtdude](https://www.ruby-forum.com/u/dezrtdude)\ **Post date:** [June 22, 2008, 4:54pm UTC](https://www.ruby-forum.com/t/rails-clock-and-javascript-clock-seconds-apart/141027/4 "2008-06-22T16:54:56Z")
On Jun 22, 5:34 am, Frederick C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > between when you evaluated Time.now in your app and when the page > finished loading and the browser started to run the javascript? No, the difference is actually between the Javascript “Time.now”, and the rails property “Object.created\_at”. What I did was just base the time on the server completely and worked some code like the following: //SET SOME OTHER VALUES IN RAILS EARLIER My initial problem was the seeming lack of Javascript “static” types. But using that allowed me to sort of create a static object. Anyway, basing the time strictly on the server worked. One question: If you use RJS does it get re-evaluated on each iteration, or does it get “pumped out” once-for-all-time like regular Javascript? ---
**Author:** ![dezrtdude](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f4b2a3/32.png) [@dezrtdude](https://www.ruby-forum.com/u/dezrtdude)\ **Post date:** [June 22, 2008, 5:56pm UTC](https://www.ruby-forum.com/t/rails-clock-and-javascript-clock-seconds-apart/141027/5 "2008-06-22T17:56:27Z")
> One question: If you use RJS does it get re-evaluated on each > iteration, or does it get “pumped out” once-for-all-time like regular > Javascript? > evaluated on each request. Fred ---
**Author:** ![dezrtdude](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f4b2a3/32.png) [@dezrtdude](https://www.ruby-forum.com/u/dezrtdude)\ **Post date:** [June 22, 2008, 11:34am UTC](https://www.ruby-forum.com/t/rails-clock-and-javascript-clock-seconds-apart/141027/6 "2008-06-22T11:34:51Z")
On 21 Jun 2008, at 02:16, gberz3 wrote: > Yes, if they’re running on the same system. In a distributed system, > not at all, but it would be nice if it were _consistently_ out of > sync. Ya know? Still I need a mechanism to right the wrong. > Thoughts? What exactly are you doing? Is the time difference just the difference between when you evaluated Time.now in your app and when the page finished loading and the browser started to run the javascript?