由于我们从接口获取的数据格式JSON格式，很多标记都是boolean或者int，如何把这些标记转换为页面显示的文字描述，或者通过几个属性运算得到一个新的输出结果，这就要用到model的computeds方法，直接举个栗子吧：
var Model = new(MVVM.Model.extend({ defaults:{ orderList:[{ title:'', pay_price:'', }], realname:'', address:'', ordersn:'', time_format:'', mobile:'', }, initialize: function() { return; }, parse: function(data) { //console.log(data); return data; }, validate: function(attrs, options) { return ; }, computeds: {//从这里开始 title:{ get:function(){ var orderList = this.get('orderList'); return orderList[0].title; } }, pay_price:{ get:function(){ var orderList = this.get('orderList'); return orderList[0].pay_price; } }, show_expresscom:{ get:function(){ if(this.get('expresscom') == ''){ return "暂无"; }else{ return this.get('expresscom'); } } }, show_expresssn:{ get:function(){ if(this.get('expresssn') == ''){ return "暂无"; }else{ return this.get('expresssn'); } } }, show_status:{//订单状态处理 get:function(){ var str_status = "未知状态"; var int_stat = 100; if(this.get('orderList') != []){ var orderList = this.get('orderList'); for (var i=0; i < orderList.length; i++) { int_stat = parseInt(orderList[i].status); break; }; } switch(int_stat){ case 0: str_status = "待支付"; break; case 1: str_status = "待发货"; break; case 2: str_status = "待收货"; break; case 3: str_status = "已完成"; break; case -1: str_status = "已关闭"; break; case -6: str_status = "已退款"; break; case -5: str_status = "已退货"; break; case -4: if(this.get('return_status') == 1){ str_status = "验货中"; }else{ str_status = "退货中"; } break; case -5: str_status = "已退货"; break; default: break; } return str_status; } }, }, sync: function(method, model, options) { switch (method) { case "create": break; case "update": break; case "patch": break; case "read": Service.request({},options); break; case "delete": break; default: break; } } }))()