diff --git a/public/react/src/modules/courses/coursesDetail/CoursesLeftNav.js b/public/react/src/modules/courses/coursesDetail/CoursesLeftNav.js
index b4912f6c4..f8e425128 100644
--- a/public/react/src/modules/courses/coursesDetail/CoursesLeftNav.js
+++ b/public/react/src/modules/courses/coursesDetail/CoursesLeftNav.js
@@ -181,6 +181,7 @@ class Coursesleftnav extends Component{
   }
 
   componentDidMount() {
+
     this.setState({
       url:this.props.match.url
     })
@@ -545,7 +546,7 @@ class Coursesleftnav extends Component{
 							message:"提示",
 							description:result.data.message
 						});
-
+             
 
 						if(positiontype==="files"){
               this.updasaveNavmoda()