aaaaa.js

!function($, start_x, start_y, target_start_x, target_start_y, $target) {
  $(document).on('mousedown', function(e){
    var style, target = e.target;
    do {
      style = document.defaultView.getComputedStyle(target, null);
    } while (style.position !== 'absolute' && (target = target.parentNode));
    if (!target)return;
    $target = $(target);
    var position = $target.position();
    start_x = e.pageX;
    start_y = e.pageY;
    target_start_x = position.left;
    target_start_y = position.top;
    console.log(target);
    e.stopPropagation();
    e.preventDefault();
  }).on('mousemove', function(e) {
    if (!$target) return;
    $target.css({
        left: target_start_x + (e.pageX - start_x) + 'px'
      , top: target_start_y + (e.pageY - start_y) + 'px'
    });
    e.stopPropagation();
    e.preventDefault();
  }).on('mouseup', function(e) {
    if (!$target) return;
    var position = $target.position();
    console.log(position.top, position.left);
    $target = null;
    e.stopPropagation();
    e.preventDefault();
  });
}(jQuery);