<span style="font-size:18px;">//rate.js 
//获取应用实例 
var app = getApp() 
Page( { 
 data: { 
  code: 'USD', 
  currencyF_Name: '', 
  currencyT_Name: '', 
  currencyF: '', 
  currencyT: '', 
  currencyFD: 1, 
  exchange: 0, 
  result: 0, 
  updateTime: '', 
 }, 
 onLoad: function( options ) { 
  var that = this; 
   //获取汇率 
   wx.request( { 
    url: "http://op.juhe.cn/onebox/exchange/currency?key=我的appkey&from=CNY&to="+code, 
    success: function( res ) { 
     that.setData( { 
      currencyF_Name: res.data.result[0].currencyF_Name, 
      currencyT_Name: res.data.result[0].currencyT_Name, 
      currencyF: res.data.result[0].currencyF, 
      currencyT: res.data.result[0].currencyT, 
      currencyFD: res.data.result[0].currencyFD, 
      exchange: res.data.result[0].exchange, 
      result: res.data.result[0].result, 
      updateTime: res.data.result[0].updateTime, 
     }) 
    } 
   }) 
 } 
})</span>