docs(dom/document): fixed #274

wangdoc · May 4, 2024 · 2f55be8 · 2f55be8
1 parent eefffcf
commit 2f55be8
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/docs/dom/document.md b/docs/dom/document.md
@@ -69,7 +69,10 @@ document.scrollingElement.scrollTop = 0;
 `document.fullscreenElement`属性返回当前以全屏状态展示的 DOM 元素。如果不是全屏状态，该属性返回`null`。
 
 ```javascript
-if (document.fullscreenElement.nodeName == 'VIDEO') {
+if (
+  document.fullscreenElement && 
+  document.fullscreenElement.nodeName == 'VIDEO'
+) {
   console.log('全屏播放视频');
 }
 ```