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
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