diff --git a/README-zh.md b/README-zh.md
index 4d63d20..cde63f4 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -51,7 +51,7 @@
 
 然后可以使用 script 方式引入 umd 包，当然也可使用模块化方式 import。并且只有一个 API，使用如下：
 
-```
+```js
 import CanvasNest from 'canvas-nest.js';
 
 const config = {
@@ -77,7 +77,7 @@ cn.destroy();
 
 Example:
 
-```
+```html
 <script type="text/javascript" color="0,0,255" opacity='0.7' zIndex="-2" count="99" src="//cdn.bootcss.com/canvas-nest.js/x.x.x/canvas-nest.js"></script>
 ```
 
diff --git a/README.md b/README.md
index 52c3d1d..442cd7f 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,7 @@ Or import the `umd` package use `script` tag.
 
 There is only one API, use it like:
 
-```
+```js
 import CanvasNest from 'canvas-nest.js';
 
 const config = {