leetcode 328 补充js代码

animation-simulation/链表篇/leetcode328奇偶链表.md

@@ -89,3 +89,19 @@ public:
 };
 ```
 
+JS Code:
+```javascript
+var oddEvenList = function(head) {
+    if(!head || !head.next) return head;
+    let odd = head, even = head.next, evenHead = even;
+    while(odd.next && even.next){
+        odd.next = even.next;
+        odd = odd.next;
+        even.next = odd.next;
+        even = even.next;
+    }
+    odd.next = evenHead;
+    return head;
+};
+```
+