Drag and Drop Z-Index Stacking
In an example for a previous post, I showed you how to use opacity during a drag'n'drop transaction. One bit I didn't account for was element stacking and bringing the most recent element to the top of the stack. To do so, we'll need to use a variable that represents the highest zIndex, which we'll be incrementing.
The MooTools JavaScript
window.addEvent('domready',function() {
var zIndex = 2;
$$('.draggable').each(function(el) {
var drag = new Drag.Move(el,{
grid: false,
preventDefault: true,
onStart: function() {
el.setStyle('z-index',zIndex++); //increment!
}
});
});
});
As you probably expected, the process is as simple as it gets. Correct stacking order is incredibly important as you don't want items to be wrongly buried.
![CSS Animations Between Media Queries]()
CSS animations are right up there with sliced bread. CSS animations are efficient because they can be hardware accelerated, they require no JavaScript overhead, and they are composed of very little CSS code. Quite often we add CSS transforms to elements via CSS during...
![6 Things You Didn’t Know About Firefox OS]()
Firefox OS is all over the tech news and for good reason: Mozilla's finally given web developers the platform that they need to create apps the way they've been creating them for years -- with CSS, HTML, and JavaScript. Firefox OS has been rapidly improving...
![MooTools-Like Element Creation in jQuery]()
I really dislike jQuery's element creation syntax. It's basically the same as typing out HTML but within a JavaScript string...ugly! Luckily Basil Goldman has created a jQuery plugin that allows you to create elements using MooTools-like syntax.
Standard jQuery Element Creation
Looks exactly like writing out...
![Image Data URIs with PHP]()
If you troll page markup like me, you've no doubt seen the use of data URI's within image src attributes. Instead of providing a traditional address to the image, the image file data is base64-encoded and stuffed within the src attribute. Doing so saves...
I believe z++ should actually be zIndex++ … or you get fail ;)
This Friday’s dumbass mistake brought to you by…lack of sleep.
Nice idea, although it does not seem to work for me (tested in Chrome/Windows).
Either way, I think you should do pre-increment instead of post-increment, to assign the incremented value to the element:
el.setStyle('z-index', ++zIndex). That way you wont need to start the variable in 2 :)Is it just me or did your original referenced topic use
z-indexstacking as well?Have a look at the footer on my homepage. I have incorporated dragging functions with jquery for the 4 items. I had hover z-index replace at one point but removed it because it was not realistic with solid gears :) THX
@Brian Klepper: I meant 6 items.. :0
hi dav, is it possible to write draggable events into a db?