|  | @@ -29,14 +29,7 @@ export function createRouterGuards(router: Router) {
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				|  |  |      // console.log(to, '修改标题');
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				|  |  |      // console.log('access token');
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				|  |  |      document.title = to.meta.title ? to.meta.title : ('音乐数字课堂' as string);
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				|  |  | -    if ('serviceWorker' in navigator) {
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				|  |  | -      console.log(caches.keys(), 'caches.keys()');
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				|  |  | -      caches.keys().then(function (cacheNames) {
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				|  |  | -        cacheNames.forEach(function (cacheName) {
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				|  |  | -          caches.delete(cacheName);
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				|  |  | -        });
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				|  |  | -      });
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				|  |  | -    }
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				|  |  | +
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				|  |  |      if (!isChrome()) {
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				|  |  |        return;
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				|  |  |      }
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