Update JavaScript style (Chapter of Tree)

codes/javascript/chapter_tree/binary_tree.js

@@ -10,17 +10,17 @@ const { printTree } = require("../include/PrintUtil");
 /* 初始化二叉树 */
 // 初始化结点
 let n1 = new Tree.TreeNode(1),
-n2 = new Tree.TreeNode(2),
-n3 = new Tree.TreeNode(3),
-n4 = new Tree.TreeNode(4),
-n5 = new Tree.TreeNode(5);
+    n2 = new Tree.TreeNode(2),
+    n3 = new Tree.TreeNode(3),
+    n4 = new Tree.TreeNode(4),
+    n5 = new Tree.TreeNode(5);
 // 构建引用指向（即指针）
 n1.left = n2;
 n1.right = n3;
 n2.left = n4;
 n2.right = n5;
-console.log("\n初始化二叉树\n")
-printTree(n1)
+console.log("\n初始化二叉树\n");
+printTree(n1);
 
 /* 插入与删除结点 */
 let P = new Tree.TreeNode(0);