地址栏取值

上代码：

//http://xx.xxxxxxxxxxx.com/project/?code=061ok33917FX2O1wVS591GpZ291ok33r&state=
var code = getQueryString('code')
console.log("code:" + code)
// code:061ok33917FX2O1wVS591GpZ291ok33r
// 截取字符串
function getQueryString(name) {
  var reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)')
  var r = window.location.search.substr(1).match(reg)
  if (r != null)
    return unescape(r[2]);
  return null;
}