Topic awaiting preservation: variables and such (Page 1 of 1)

I have a function:
function change_close(object) {
object.style.display = "none";
}

That I use via
onClick change_close(content_5);

This works fine. But - let's say that I want to have several things happen, like setting the style.display for content_5, and control_5, as well as swapping an image ("button_5").

So I thought I would use something like
onClick=change_close(5);
but I can't figure out how to grab that and build the other names, so that I can perform the tasks. Like, with that object ("5"), how do I come up with
content_5.style.display="none";
control_5.style.display="none";
button_5.src = "closed.gif";

How do i assemble the full object name?



[This message has been edited by Pugzly (edited 12-05-2001).]

This is one of those situations where an eval may be the way to go

function doSomething(num) {

eval('content_' +num+ '.style.display="none"');

}

you could also use an array in this situation






:[ Computers let you make more mistakes faster than any other invention in human history, with the possible exceptions of handguns and tequila. ]:

I agree.

The only objection that I've heard to using eval is that it is slower. This is true but for "onesie twosie" operations I would think the speed difference is negligible.

You can use something like this:

function change_close(index) {
    document.all["content_" + index].style.display = "none";
    document.all["control_" + index].style.display = "none";
    // you can also use my getObj() function above, like this
    // getObj("content_"+index).style.display = "none";
    // getObj("control_"+index).style.display = "none";
    document.images["button_" + index].src;
}

Cool....The eval thing works great. I'll try using the GetObject idea as well. It's basically just a concept I'm working on with collapsible DIVs such as shown here. I have the two parts of the div - the content part ("content_"), and the titlebar part ("control_"). I also have a little restore button that swaps out the maximize button when the control div is maximized.

Thanks for the help. I'm learning!