So... this is the point where I'm going to say cross-posting is a bad idea. One, you're confusing people. Two, you're having people double posting their answers. Three, it's not efficient, at all. So, back to the task at hand.
So, that's using the code you mentioned on this post? Any reason you're sticking to the JQuery when you've specifically asked for a Particle SDK example to which you got a working response?
By making a function that takes an argument as an input in which you specify what devices/functions/variables you'd like to call. If I'm not mistaken, I've already given you an example of that over here. explained in-depth over here, and used in this example for you over here, again.
Well, let's say you're partially wrong. You can have different buttons that call different variables. You can have one button that calls multiple variables, and you can have a button that requests a variable that's combined string of multiple variables. Only the latter requires changes on the device side. The former two can be done in javascript just fine.
The most important thing, however, is the following:
At this point, I'm staring to lose track of that too, and taking all your topics questions into consideration, I've got a feeling you're uncertain yourself. You're asking questions for the same thing in at least three topics, some of which are double, or ignored when answered.
Try getting a clear picture of what you want to do, sketch it out on paper if you must, and then let us know. When doing so, try to stick to one topic, since it's way too confusing to keep track of what I've already answered.