更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/underscore/modules/random.js

@@ -0,0 +1,8 @@
+// Return a random integer between `min` and `max` (inclusive).
+export default function random(min, max) {
+  if (max == null) {
+    max = min;
+    min = 0;
+  }
+  return min + Math.floor(Math.random() * (max - min + 1));
+}