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-pure/modules/es.string.pad-end.js

@@ -0,0 +1,12 @@
+'use strict';
+var $ = require('../internals/export');
+var $padEnd = require('../internals/string-pad').end;
+var WEBKIT_BUG = require('../internals/string-pad-webkit-bug');
+
+// `String.prototype.padEnd` method
+// https://tc39.es/ecma262/#sec-string.prototype.padend
+$({ target: 'String', proto: true, forced: WEBKIT_BUG }, {
+  padEnd: function padEnd(maxLength /* , fillString = ' ' */) {
+    return $padEnd(this, maxLength, arguments.length > 1 ? arguments[1] : undefined);
+  }
+});