Search jQuery

jQuery Forum

Need a fresh start!! Unwanted Caching.

in jQuery Mobile • 6 months ago

I have a main page, lets name it ABC.htm. On it I have a link to a second page named FOO.htm. Both of these pages are built with JQM. How do I make certain that the DOM from ABC.htm is not cached after the user clicks on the link and transitions to FOO.htm?

I know that rel=external will do it but it has the unwanted side effect of opening a browser window (when running chromeless).

I have tried setting data-dom-cache but it should be false by defalut.

I realize that I didn't give a lot of background. I am trying to distill down what I think the problem is.

Thanks!

Replies(5)

watusiware

Re: Need a fresh start!! Unwanted Caching.

6 months ago

You can't.

The first page loaded is always cached.

Using rel="external" has more unwanted side-effects than just opening a separate browser window when running chromeless. It also doesn't do transitions, and takes extra time because the entire framework is being reloaded.

A better design would have been for jQuery Mobile to always create a "dummy" content-free page for the base. I guess it's a bit late for that...

steveatcdc

Re: Need a fresh start!! Unwanted Caching.

6 months ago

Thanks for the frank answer. Actually no, it is not too late. The problem is that I am building a smidgen of offline functionality into this app. The data for the app resides inside the Intranet of this major manufacturer and the user will have to connect via VPN in order to have it be fully functional.

For my prototype, which is functioning great aside from a few minor distractions, I had the home page for the MVC app (Home/Index) include the manifest property. It checks to see if there is a VPN connection and checks the appcache. If all is good I allow them to continue on to other views which are loaded from the network. So my problem is that since the first page loaded includes the manifest property, all subsequent pages have it. By default they are cached offline. Not only is it irritating because I have to physically change the manifest file each time I change some style or something, it is giving me fits with script that I am dynamically injecting into the header to support some styles on Kendo UI graphs and what not.

So when you say have "jQuery Mobile to always create a "dummy" content-free page", what exactly do you mean by that?

Thanks!

watusiware

Re: Need a fresh start!! Unwanted Caching.

6 months ago

"So when you say have "jQuery Mobile to always create a "dummy" content-free page", what exactly do you mean by that?

I mean that the fact that jQuery Mobile always caches the first page is poor design. It's a fundamental design flaw. The first page is "special".

The reason for this is that the first page is the "base" for all other pages that are loaded. They are actually loaded into the document that came with the first page.

A better design wouldn't make the content of the first page loaded special, in that it is always cached in the DOM.

When I said "it's too late for that", I mean that this design flaw is now effectively set in stone.

Best you can do is to have the first page empty and write a bit of code to immediately transition to some other page, which would not have to stay in the DOM.

steveatcdc

Re: Need a fresh start!! Unwanted Caching.

6 months ago

Thank you VERY much!!!!! Your explanation and advice guided me to the solution of a problem that has been driving me nuts for the better part of a week. As a matter of fact I am certain that this will take care of several obscure problems that I have posted about here of late. That first page was most definitely messing me up. I only had the JQM references there to style a single button and didn't understand the ramnifications. So again, a big THANKS!!!

steveatcdc

Re: Need a fresh start!! Unwanted Caching.

6 months ago

10-4

I understand now, thought you were talking about my stuff. I sure appreciate the help!

Top Reply

Response title

Attachments

jQuery Forum

Need a fresh start!! Unwanted Caching.

Replies(5)

Re: Need a fresh start!! Unwanted Caching.

Re: Need a fresh start!! Unwanted Caching.

Re: Need a fresh start!! Unwanted Caching.

Re: Need a fresh start!! Unwanted Caching.

Re: Need a fresh start!! Unwanted Caching.

Statistics

Tags

Actions

Related Posts