updata

strawHatYz · strawHatYz · commit 6daeb04d9da8 · 2019-01-13T01:02:16.000+08:00
diff --git a/docs/dom/node.md b/docs/dom/node.md
@@ -175,8 +175,8 @@ while (el !== null) {
 ```javascript
 // HTML 代码如下
 // <div id="d1">hello</div><div id="d2">world</div>
-var div1 = document.getElementById('d1');
-var div2 = document.getElementById('d2');
+var d1 = document.getElementById('d1');
+var d2 = document.getElementById('d2');
 
 d2.previousSibling === d1 // true
 ```
