小程序獲取屏幕信息後怎麼在樣式設置

js:獲取系統信息

var that = this ;

wx.getSystemInfo({

       success: function (res) {

        that.setData({

           winWidth: res.windowWidth,

           winheight: res.windowHeight

         });

       }

     });

 

css:設置樣式：

< view  style = "width:{{winWidth}}px;height:{{winheight}}px;" >