function bind_order_event()
    {
        var order_seq = 0; //设置变量等于0
        //while 在进入循环时先检查条件,下面为true,那就直接进入循环
        while(true)   //整不明白
        {
            //先暂且不论Utils是什么东西, 可以肯定是一个对象
            //第一次进入循环 order_seq= 0
            //那么$('order_'+order_seq) = $('order_0') 
            //这样看来可能是找页面上的某个元素对象
            //而这个$('order_0') 又是Utils的一个属性
            
            var order_sn = Utils.$('order_'+order_seq); 整不明白

            //也就是说,如果这个存在,也就是找到了$('order_0') 具体你点右键，查看源代码
            //看看是不是有order_0字样的东西
            if (order_sn)   //这里是判断什么的？判断order_sn存在呢，还是判断值呢？
            {
                //e 在函数参数列表内,那么当鼠标移动,会有个事件发生,就是event,
                order_sn.onmouseover = function(e) //设置函数e代表 鼠标移动？ 
                {
                    //试图执行clearTimeout,如果失败,系统会转到catch
                    try         //没明白
                    {
                        window.clearTimeout(timer); //清除时间
                    }
                    catch(e)                           //没明白 --------
                    {
                    }
                    //估计是调用ajax,返回一个什么值
                    var order_id = Utils.request(this.href, 'order_id'); //没明白
                    //有了order_id,调用下面这个函数,估计是显示产品
                    show_order_goods(e, order_id, show_goods_layer);     //运行这个函数？
                }
                //
                order_sn.onmouseout = function(e)                //设置函数e代表 鼠标离开？ 

                {
                    hide_order_goods(show_goods_layer)            //运行这个函数？

                }
                order_seq++;                                变量的值加1
            }
            else                                          //否则
            {
                break;                                     //终止运行
            }
        }

 

 

 

全文如下：

    onload = function()
    {
        // 开始检查订单
        startCheckOrder();
    }

    /**
     * 搜索订单
     */
    function searchOrder()
    {
        listTable.filter['order_sn'] = Utils.trim(document.forms['searchForm'].elements['order_sn'].value);
        listTable.filter['consignee'] = Utils.trim(document.forms['searchForm'].elements['consignee'].value);
        listTable.filter['composite_status'] = document.forms['searchForm'].elements['status'].value;
        listTable.filter['page'] = 1;
        listTable.loadList();
    }

    function check()
    {
      var snArray = new Array();
      var eles = document.forms['listForm'].elements;
      for (var i=0; i<eles.length; i++)
      {
        if (eles[i].tagName == 'INPUT' && eles[i].type == 'checkbox' && eles[i].checked && eles[i].value != 'on')
        {
          snArray.push(eles[i].value);
        }
      }
      if (snArray.length == 0)
      {
        return false;
      }
      else
      {
        eles['order_id'].value = snArray.toString();
        return true;
      }
    }
    /**
     * 显示订单商品及缩图
     */
    var show_goods_layer = 'order_goods_layer';
    var goods_hash_table = new Object;
    var timer = new Object;

    /**
     * 绑定订单号事件
     *
     * @return void
     */
    function bind_order_event()
    {
        var order_seq = 0;
        while(true)
        {
            var order_sn = Utils.$('order_'+order_seq);
            if (order_sn)
            {
                order_sn.onmouseover = function(e)
                {
                    try
                    {
                        window.clearTimeout(timer);
                    }
                    catch(e)
                    {
                    }
                    var order_id = Utils.request(this.href, 'order_id');
                    show_order_goods(e, order_id, show_goods_layer);
                }
                order_sn.onmouseout = function(e)
                {
                    hide_order_goods(show_goods_layer)
                }
                order_seq++;
            }
            else
            {
                break;
            }
        }
    }
    listTable.listCallback = function(result, txt)
    {
        if (result.error > 0)
        {
            alert(result.message);
        }
        else
        {
            try
            {
                document.getElementById('listDiv').innerHTML = result.content;
                bind_order_event();
                if (typeof result.filter == "object")
                {
                    listTable.filter = result.filter;
                }
                listTable.pageCount = result.page_count;
            }
            catch(e)
            {
                alert(e.message);
            }
        }
    }
    /**
     * 浏览器兼容式绑定Onload事件
     *
     */
    if (Browser.isIE)
    {
        window.attachEvent("onload", bind_order_event);
    }
    else
    {
        window.addEventListener("load", bind_order_event, false);
    }

    /**
     * 建立订单商品显示层
     *
     * @return void
     */
    function create_goods_layer(id)
    {
        if (!Utils.$(id))
        {
            var n_div = document.createElement('DIV');
            n_div.id = id;
            n_div.className = 'order-goods';
            document.body.appendChild(n_div);
            Utils.$(id).onmouseover = function()
            {
                window.clearTimeout(window.timer);
            }
            Utils.$(id).onmouseout = function()
            {
                hide_order_goods(id);
            }
        }
        else
        {
            Utils.$(id).style.display = '';
        }
    }

    /**
     * 显示订单商品数据
     *
     * @return void
     */
    function show_order_goods(e, order_id, layer_id)
    {
        create_goods_layer(layer_id);
        $layer_id = Utils.$(layer_id);
        $layer_id.style.top = (Utils.y(e) + 12) + 'px';
        $layer_id.style.left = (Utils.x(e) + 12) + 'px';
        if (typeof(goods_hash_table[order_id]) == 'object')
        {
            response_goods_info(goods_hash_table[order_id]);
        }
        else
        {
            $layer_id.innerHTML = loading;
            Ajax.call('order.php?is_ajax=1&act=get_goods_info&order_id='+order_id, '', response_goods_info , 'POST', 'JSON');
        }
    }

    /**
     * 隐藏订单商品
     *
     * @return void
     */
    function hide_order_goods(layer_id)
    {
        $layer_id = Utils.$(layer_id);
        window.timer = window.setTimeout('$layer_id.style.display = "none"', 500);
    }

    /**
     * 处理订单商品的Callback
     *
     * @return void
     */
    function response_goods_info(result)
    {
        if (result.error > 0)
        {
            alert(result.message);
            hide_order_goods(show_goods_layer);
            return;
        }
        if (typeof(goods_hash_table[result.content[0].order_id]) == 'undefined')
        {
            goods_hash_table[result.content[0].order_id] = result;
        }
        Utils.$(show_goods_layer).innerHTML = result.content[0].str;
    }