find how far draggable is offset from mouse javascript code example

Example: html dragging get mouse position

//  JavaScript

document.addEventListener("dragover", function(e){
    e = e || window.event;
    var dragX = e.pageX, dragY = e.pageY;

    console.log("X: "+dragX+" Y: "+dragY);
}, false);

//  jQuery

$("body").bind("dragover", function(e){
    var dragX = e.pageX, dragY = e.pageY;

    console.log("X: "+dragX+" Y: "+dragY);
});