From 8f7c8fb9c0981c674632828dbea4bdf9aaabebbd Mon Sep 17 00:00:00 2001
From: Benjy Cui <benjytrys@gmail.com>
Date: Tue, 19 Apr 2016 17:06:15 +0800
Subject: [PATCH] site: improve performance

---
 site/component/MainContent/index.jsx | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/site/component/MainContent/index.jsx b/site/component/MainContent/index.jsx
index 656d7483eb..352b4c21c0 100644
--- a/site/component/MainContent/index.jsx
+++ b/site/component/MainContent/index.jsx
@@ -7,11 +7,19 @@ const SubMenu = Menu.SubMenu;
 
 export default class MainContent extends React.Component {
   componentDidMount() {
-    this.componentDidUpdate();
+    this.scrollToAnchor(this.props);
   }
 
-  componentDidUpdate() {
-    const scrollTo = this.props.location.query.scrollTo;
+  shouldComponentUpdate(nextProps) {
+    this.scrollToAnchor(nextProps);
+
+    const pathname = this.props.location.pathname;
+    return pathname !== nextProps.location.pathname ||
+      /^\/components\//i.test(pathname);
+  }
+
+  scrollToAnchor(props) {
+    const scrollTo = props.location.query.scrollTo;
     if (scrollTo !== undefined) {
       const target = document.getElementById(scrollTo);