dos

Public/static/js/common.js

@@ -59,10 +59,11 @@ let imgInfo = {};
 let blackUrl, black;
 
 
-blackUrl = $('.black').css('background-image').replace(/^url\((['"]?)(.*)\1\)$/, '$2');
+
 preloadimages(preloadImageList, function () {}, function (progress) {});
 
 $(document).ready(function () {
+    blackUrl = $('.black').css('background-image').replace(/^url\((['"]?)(.*)\1\)$/, '$2');
     $('.logo').css('top', getTranslateDistance(20));
     $('.music').click(function () {
         if ($('#music')[0].paused) {