Get Relative Position Between 2 Dom Elements Using Javascript

I've implemented a set of draggable elements that can be dropped into some containers using jQuery. What I need is an animation that moves an element to a specific container withou

Solution 1:

I never used jQuery, just looked up API, so I can assume you can do the following:

var o1 = $(element1).offset();
var o2 = $(element2).offset();
var dx = o1.left - o2.left;
var dy = o1.top - o2.top;
var distance = Math.sqrt(dx * dx + dy * dy);

Solution 2:

Using pure javascript.

var dx = obj1.offsetLeft - obj2.offsetLeft;
var dy = obj1.offsetTop - obj2.offsetTop;
var distance = Math.sqrt(Math.pow(dx,2) + Math.pow(dy,2));

Solution 3:

What about the following?

var isIE = navigator.appName.indexOf("Microsoft") != -1;

functiongetDistance(obj1, obj2){
    var obj1 = document.getElementById(obj1);
    var obj2 = document.getElementById(obj2);
    var pos1 = getRelativePos(obj1);
    var pos2 = getRelativePos(obj2);
    var dx = pos1.offsetLeft - pos2.offsetLeft;
    var dy = pos1.offsetTop - pos2.offsetTop;
    return {x:dx, y:dy};
}
functiongetRelativePos(obj){
var pos = {offsetLeft:0,offsetTop:0};
while(obj!=null){
    pos.offsetLeft += obj.offsetLeft;
    pos.offsetTop += obj.offsetTop;
    obj = isIE ? obj.parentElement : obj.offsetParent;
}
return pos;
}
//var obj = getDistance("element1","element2")
alert(obj.x+" | "+obj.y);