diff --git a/sidebar.md b/sidebar.md
index f8b475b..328e111 100644
--- a/sidebar.md
+++ b/sidebar.md
@@ -5,26 +5,21 @@
 授权：<a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/">署名-非商用许可证</a>
 
 ## 目录
-
-<ol start="0">
-
-- [前言](#README)
-- [ECMAScript 6简介](#docs/intro)
-- [let和const命令](#docs/let)
-- [多变量的模式赋值](#docs/destructuring)
-- [数组推导](#docs/comprehension)
-- [字符串的扩展](#docs/string)
-- [数值的扩展](#docs/number)
-- [对象的扩展](#docs/object)
-- [函数的扩展](#docs/function)
-- [Set和Map数据结构](#docs/set-map)
-- [Iterator和for...of循环](#docs/iterator)
-- [Generator函数](#docs/generator)
-- [Promise对象](#docs/promise)
-- [Class和Module](#docs/class)
-- [参考链接](#docs/reference)
-
-</ol>
+0. [前言](#README)
+0. [ECMAScript 6简介](#docs/intro)
+0. [let和const命令](#docs/let)
+0. [多变量的模式赋值](#docs/destructuring)
+0. [数组推导](#docs/comprehension)
+0. [字符串的扩展](#docs/string)
+0. [数值的扩展](#docs/number)
+0. [对象的扩展](#docs/object)
+0. [函数的扩展](#docs/function)
+0. [Set和Map数据结构](#docs/set-map)
+0. [Iterator和for...of循环](#docs/iterator)
+0. [Generator函数](#docs/generator)
+0. [Promise对象](#docs/promise)
+0. [Class和Module](#docs/class)
+0. [参考链接](#docs/reference)
 
 ## 其他
 - [源码](http://github.com/ruanyf/es6tutorial/)