diff --git a/web_src/js/index.js b/web_src/js/index.js
index 4748de046..612d31750 100644
--- a/web_src/js/index.js
+++ b/web_src/js/index.js
@@ -323,10 +323,9 @@ function uploadFile(file, callback) {
 }
 */
 function uploadFile(file, callback) {
-  var xhr = new XMLHttpRequest();
   retrieveNewURL(file, url => {
     // 上传文件到服务器
-    uploadFileToS3(xhr, file, url)
+    uploadFileToS3(file, url)
   })
 }
 
@@ -335,11 +334,11 @@ function retrieveNewURL(file, cb) {
   $.get(`${AppSubUrl}/attachments/get_pre_url`, (url) => {
     cb(url)
   })
-  console.info(url)
 }
 
 // 使用XMLHttpRequest来上传文件到S3。
-function uploadFileToS3(xhr, file, url) {
+function uploadFileToS3(file, url) {
+  var xhr = new XMLHttpRequest ()
   xhr.open('PUT', url, true)
   xhr.setRequestHeader('X-Csrf-Token', csrf);
   const formData = new FormData();