Re: Passing information across pages (please ignore previous message)

Thanks, Jeffry. Super helpful. I will do some reading on it. We are a small company, so the browsers won't be an issue. That's a good point about security. I will see what I can find. T. Sent from my iPhone > On Mar 11, 2015, at 7:29 PM, Jeffry Killen <jekillen@prodigy.net> wrote: > > >> On Mar 11, 2015, at 11:18 AM, Tiago Hori wrote: >> >> Folks, >> >> I have a PHP application that stores fairly large datasets. Each data set >> is composed of data points for 96 markers in 96 individuals. Right now, the >> user can either download the whole dataset or supply a list of markers in a >> txt file. However, the users want me to make a pop up form (I was thinking >> radio buttons) in which they can select the markers they want from the >> dataset. >> >> So I was thinking of a scheme where I would use java script to open another >> window, where the form with the radio buttons would be populated based on >> the database. The user would select the markers he wants and I would store >> that in session array. >> >> Then I can use the selection in the script that actually processes the data. >> >> Does that sound feasible and relatively efficient? >> >> T. > > HI; > > If you are going to use javascript to open the window, the window will have a > javascript based reference to the window with the script that opened it as > > window.opener > > for the most part you will have access via this reference to scripts and elements in the > opening > window and document objects. > > In the secondary window you would have some kind of javascript enabled > element that would take the users selections and send it to a function in > the window.opener window to process from there (instead of a form submission button) > > This requires a fair amount of javascript familiarity to implement. > But it would take some load off the server, and if security is a concern, the users data > choices won't be exposed to the network until some final submission processing is > done. The user WILL need javascript enabled. And if all browser types are to be > allowed for, both DOM compatible and Internet Explorer browsers must be coded for. > > The most significant difference between DOM browsers and Internet Explorer is > the way that event listeners are assigned and removed; different syntax for each. > Also the "ajax" XMLHttpRequest object syntax will be different. > > I hope this is useful. > JK > > >