refactor: 目录结构调整

13-前端面试/02-面试题积累/函数.md

@@ -0,0 +1,16 @@
+
+
+```
+    var arr = [1, 2, 3];
+
+    fun(arr);
+    console.log(arr);
+
+    function fun(a) {
+        a = [];
+
+    }
+```
+
+上方代码的打印结果是：[1,2,3]
+