On Mar 11, 2015, at 4:24 PM, Tiago Hori wrote:
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
If you are up to an extensive and (not for complete beginners)
relatively easy to understand text
you will get a lot of useful information from O'Reilly's: Javascript:
The Definitive Guide, 6th Ed, David Flanagan
However you will have to be able to think abstractly and adapt the
code examples they give to illustrate
programming concepts and applications.
sorry if this looks like an inappropriate ad to this list admins.
Best
JK
On Mar 11, 2015, at 7:29 PM, Jeffry Killen <jekillen@xxxxxxxxxxx>
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
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