新增底部统计代码 (#2)

_config.yml

@@ -216,6 +216,7 @@ footer:
   since: 2020 # the starting year of your website, Can be null
   icp: # ICP record number of your website, Can be null
   upyun: # url
+  code: # Statistical codes of your website, Can be null
 
 # ---------------------------------------------------------------------------------------
 # Keep version (Please don't modify)

layout/_partial/footer.ejs

@@ -34,5 +34,10 @@
                 <img src="/images/upyun.png" alt="upyun" srcset="" height="24" style="position:relative; top:6px">
                 提供CDN加速/云存储服务</a></div>
         <% } %>
+        <% if (theme.footer.hasOwnProperty('code') && theme.footer.code) { %>
+            <div class="code-info info-item">
+                <%- theme.footer.code %>
+            </div>
+        <% } %>
     </div>
 </footer>