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/internals/math-clamp.js

@@ -0,0 +1,9 @@
+'use strict';
+var aNumber = require('../internals/a-number');
+
+var $min = Math.min;
+var $max = Math.max;
+
+module.exports = function clamp(value, min, max) {
+  return $min($max(aNumber(value), aNumber(min)), aNumber(max));
+};