From 26db33dc3159f6ea7c2ca31ca6468096220405d4 Mon Sep 17 00:00:00 2001
From: "qingwei.li" <cinwell.li@gmail.com>
Date: Fri, 19 May 2017 11:36:56 +0800
Subject: [PATCH] tweaks

---
 src/core/fetch/ajax.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/core/fetch/ajax.js b/src/core/fetch/ajax.js
index d311f46..1824cc4 100644
--- a/src/core/fetch/ajax.js
+++ b/src/core/fetch/ajax.js
@@ -45,8 +45,7 @@ export function get (url, hasBar = false) {
           const result = cache[url] = {
             content: target.response,
             opt: {
-              updatedAt: xhr.getResponseHeader('last-modified') ||
-                xhr.getResponseHeader('expires')
+              updatedAt: xhr.getResponseHeader('last-modified')
             }
           }