API document 
  http://open.mobile.qq.com/api.
Page reference
< script src= "/ / open.mobile.qq.com/sdk/qqapi.js" > < / script >
 get Mobile QQ"s version 
 mqq.QQVersion can alert out normally 
 call a scan to scan the QR code 
 mqq.ui.scanQRcode ({}, function (result) {
console.log(retCode, decodeURIComponent(result));})
