jquery ui dialog替代confirm实例分析

<div id="confirm_dialog" title="提示" style="display:none;">
</div>

var common = {
  confirm_act:function(dialog_id,msg,callback) {
    $("#"+dialog_id).html("<p class='message'>"+msg+"</p>");
    $("#"+dialog_id).dialog({
      resizable: false,
      modal: true,
      overlay: {
        backgroundColor: '#000',
        opacity: 0.5
      },
      buttons: {
        '确认': function() {
          callback.call();
          $(this).dialog('close');
        },
        '取消': function() {
          $(this).dialog('close');
        }
      }
     });
  }
}

var recommend = {
  delete: function(url,obj)
  {
    $.ajax({
      url: url,
      type: "get",
      success:function(data)
      {
        ............省略..........
      }
    });
  }
}

$('.recommended_delete').click(function(){
  var obj = this;  //重命名
  common.confirm_act('confirm_dialog',$(obj).attr('msg'),function(){recommend.delete($(obj).attr('url'),obj)});
});