回答編集履歴

nullをundefinedに変更

2016/10/05 06:10

投稿

スコア5572

answer CHANGED Viewed

@@ -9,8 +9,7 @@
   for(key in o) {
     if(o[key] == num){ s.push(key); }
   }
-  let l = s.length;
-  return (l < 1) ? null : (l == 1) ? s[0] : s;
+  return (s.length <= 1) ? s[0] : s;
 };
 console.log(get(0));
 console.log(get(1));