// pc端不需要~\n      // if ('addEventListener' in document) {\n      //   document.addEventListener(\n      //     'DOMContentLoaded',\n      //     function() {\n      //       FastClick.attach(document.body);\n      //     },\n      //     false,\n      //   );\n      // }\n      if (!window.Promise) {\n        document.writeln(\n          '<script src=\"https://as.alipayobjects.com/g/component/es6-promise/3.2.2/es6-promise.min.js\"' +\n            '>' +\n            '<' +\n            '/' +\n            'script>',\n        );\n      }