diff --git a/src/libs/util.js b/src/libs/util.js
index 54394b44..cfec0dc3 100644
--- a/src/libs/util.js
+++ b/src/libs/util.js
@@ -26,7 +26,7 @@ util.openFullScreen = function () {
 }
 
 /**
- * 关闭全屏
+ * 关闭全屏 
  */
 util.exitFullScreen = function () {
   if (document.exitFullscreen) {