jQuery使用drag效果实现自由拖拽div

<div class="divWrap" id="move1" style="width: 200px; height: 200px; background: Green; border: 1px solid red; position: absolute; top: 100px; left: 100px; cursor: move; -moz-user-select: none; -webkit-user-select: none;"></div>
<div class="divWrap" style="width: 200px; height: 200px; background: brown; border: 1px solid red; position: absolute; top: 300px; left: 100px;">
  <h3 id="move2" style="height: 45px; line-height: 45px; font-size: 18px; background: red; margin: 0; cursor: move; -moz-user-select: none; -webkit-user-select: none;">Title--Move</h3>
</div>

(function($) {
  $.fn.dragDiv = function(divWrap) {
    return this.each(function() {
      var $divMove = $(this);//鼠标可拖拽区域
      var $divWrap = divWrap "left": x - mX + dX, "top": y - mY + dY});//div动态位置赋值
        }
      });
      $divMove.mouseup(function() {
        isDown = false;//鼠标拖拽结束
      });
    });
  };
})(jQuery);
//
$(document).ready(function() {
  $("#move1").dragDiv();//拖拽整个div
  $("#move2").dragDiv(".divWrap");//拖拽div头部
});