更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/core-js/internals/get-method.js

@@ -0,0 +1,10 @@
+'use strict';
+var aCallable = require('../internals/a-callable');
+var isNullOrUndefined = require('../internals/is-null-or-undefined');
+
+// `GetMethod` abstract operation
+// https://tc39.es/ecma262/#sec-getmethod
+module.exports = function (V, P) {
+  var func = V[P];
+  return isNullOrUndefined(func) ? undefined : aCallable(func);
+};