feat(head): minor changes of dns-prefetch

- split the dns-prefetch
- add `chart.google.com`
- add `custom_font_host`

layout/_partial/config_dnsprefetch.ejs

@@ -0,0 +1,44 @@
+<meta http-equiv="x-dns-prefetch-control" content="on">
+<% if(theme.vendors.materialcdn) { %>
+    <link rel="dns-prefetch" href="<%= theme.vendors.materialcdn %>"/>
+<% } %>
+<% if(theme.leancloud.enable === true) { %>
+    <link rel="dns-prefetch" href="<%= theme.leancloud.av_core_mini %>"/>
+<% } %>
+<% if(theme.busuanzi.enable === true) { %>
+    <link rel="dns-prefetch" href="https://busuanzi.ibruce.info"/>
+<% } %>
+<% if(theme.comment.use == "changyan"){ %>
+    <link rel="dns-prefetch" href="https://changyan.sohu.com"/>
+<% } %>
+<% if(theme.comment.use == "163gentie"){ %>
+    <link rel="dns-prefetch" href="https://img1.cache.netease.com"/>
+<% } %>
+<% if(theme.comment.use == "livere"){ %>
+        <link rel="dns-prefetch" href="https://cdn-city.livere.com"/>
+<% } %>
+<% if(theme.analytics.use === "baidu") { %>
+        <link rel="dns-prefetch" href="https://hm.baidu.com"/>
+<% } %>
+<% if(theme.analytics.use === "google") { %>
+        <link rel="dns-prefetch" href="https://www.google-analytics.com"/>
+<% } %>
+<% if(theme.analytics.use === "cnzz") { %>
+        <link rel="dns-prefetch" href="https://s95.cnzz.com"/>
+<% } %>
+<% if(theme.fonts.host === "google") { %>
+    <link rel="dns-prefetch" href="https://fonts.googleapis.com"/>
+<% } %>
+<% if(theme.fonts.host === "baomitu") { %>
+    <link rel="dns-prefetch" href="https://lib.baomitu.com"/>
+<% } %>
+<% if(theme.fonts.use === "custom") { %>
+    <link rel="dns-prefetch" href="<%= theme.fonts.custom_font_host %>"/>
+<% } %>
+<% if(theme.qrcode.use === "online" && theme.qrcode.enable === "true") { %>
+    <% if(config.language === "zh-CN") { %>
+        <link rel="dns-prefetch" href="https://pan.baidu.com"/>
+    <% } else { %>
+        <link rel="dns-prefetch" href="https://chart.googleapis.com"/>
+    <% } %>
+<% } %>

layout/_partial/head.ejs

@@ -43,44 +43,7 @@
     </title>
 
     <!-- dns prefetch -->
-    <meta http-equiv="x-dns-prefetch-control" content="on">
-    <% if(theme.materialcdn.use === true) { %>
-        <link rel="dns-prefetch" href="<%= theme.materialcdn.base %>"/>
-    <%}%>
-    <% if(theme.leancloud.enable === true) { %>
-        <link rel="dns-prefetch" href="<%= theme.leancloud.av_core_mini %>"/>
-    <% } %>
-    <% if(theme.comment.use == "changyan"){ %>
-        <link rel="dns-prefetch" href="https://changyan.sohu.com"/>
-    <% } %>
-    <% if(theme.comment.use == "163gentie"){ %>
-        <link rel="dns-prefetch" href="https://img1.cache.netease.com"/>
-    <% } %>
-    <% if(theme.comment.use == "livere"){ %>
-        <link rel="dns-prefetch" href="https://cdn-city.livere.com"/>
-    <% } %>
-    <% if(theme.analytics.use === "baidu") { %>
-        <link rel="dns-prefetch" href="https://hm.baidu.com"/>
-    <% } %>
-    <% if(theme.analytics.use === "google") { %>
-        <link rel="dns-prefetch" href="https://www.google-analytics.com"/>
-    <% } %>
-    <% if(theme.analytics.use === "cnzz") { %>
-        <link rel="dns-prefetch" href="https://s95.cnzz.com"/>
-    <% } %>
-    <% if(theme.busuanzi.enable === true) { %>
-        <link rel="dns-prefetch" href="https://busuanzi.ibruce.info"/>
-    <% } %>
-    <% if(theme.fonts.host === "google") { %>
-        <link rel="dns-prefetch" href="https://fonts.googleapis.com"/>
-        <link rel="dns-prefetch" href="https://fonts.gstatic.com"/>
-    <% } %>
-    <% if(theme.fonts.host === "baomitu") { %>
-        <link rel="dns-prefetch" href="https://lib.baomitu.com"/>
-    <% } %>
-    <% if(theme.qrcode.use === "online" && theme.qrcode.enable === "true") { %>
-        <link rel="dns-prefetch" href="https://pan.baidu.com"/>
-    <% } %>
+    <%- partial('_partial/config_dnsprefetch') %>
 
     <!-- Meta & Info -->
     <meta http-equiv="X-UA-Compatible">