/**
 * Created by Rui on 2017/9/21.
 */
// export function MP(ak) {
//   return new Promise(function (resolve, reject) {
//     window.init = function () {
//       resolve(BMap)
//     }
//     var script = document.createElement("script");
//     script.type = "text/javascript";
//     script.src = "http://api.map.baidu.com/api?v=2.0&ak="+ak+"&callback=init";
//     script.onerror = reject;
//     document.head.appendChild(script);
//   })
// }