feat: update

dev/content/_posts/javascript/JS中如何准确判断数据类型.md

@@ -6,7 +6,7 @@ tags:
 title: JS中如何准确判断数据类型
 author: Oliver
 location: Beijing;
-image: https://i.picsum.photos/id/79/800/600.jpg
+image: https://cdn.pixabay.com/photo/2016/11/19/14/00/code-1839406_960_720.jpg
 meta:
   - name: title
     content: The perform of python's unicode problem on different computer
@@ -27,6 +27,7 @@ featured: false
 
 >我们讲过JS的几大数据类型，也用typeof查看了几个简单的数据类型值。那么今天我们再来更宽泛的了解一下这方面的知识。请看如下代码。
  
+
 ```
 var num = 123;
 var str = 'aflypig';