HTML5: Drag/drop on X-axis and without fade?

Question

I've been looking for drag-and-drop examples/tutorials for HTML5, but all of them so far involve an object that fades as it's being dragged and without being constrained to any axis. I was wondering if it's possible to have the actual object itself be dragged as opposed to a ghost of it and whether I can constrain it to X or Y axis?

Thanks!

Answer 1

Yes, easily, by writing it yourself.

elem.onmousedown = function(e) {
    e = e || window.event;
    var start = 0, diff = 0;
    if( e.pageX) start = e.pageX;
    else if( e.clientX) start = e.clientX;

    elem.style.position = 'relative';
    document.body.onmousemove = function(e) {
        e = e || window.event;
        var end = 0;
        if( e.pageX) end = e.pageX;
        else if( e.clientX) end = e.clientX;

        diff = end-start;
        elem.style.left = diff+"px";
    };
    document.body.onmouseup = function() {
        // do something with the action here
        // elem has been moved by diff pixels in the X axis
        elem.style.position = 'static';
        document.body.onmousemove = document.body.onmouseup = null;
    };
}