From df3b97b6594457d5899ba3be9f25f3a17de6cecd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=89=A7=E4=B8=AD=E4=BA=BA?= <bh_lay@126.com>
Date: Sat, 11 Nov 2017 23:49:10 +0800
Subject: [PATCH] =?UTF-8?q?=E8=B0=83=E6=95=B4=E5=AF=BC=E8=88=AA=E6=98=BE?=
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---
 frontEnd/single-page/src/js/navigation.js | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/frontEnd/single-page/src/js/navigation.js b/frontEnd/single-page/src/js/navigation.js
index 0ed1e9f07..dd2567cec 100644
--- a/frontEnd/single-page/src/js/navigation.js
+++ b/frontEnd/single-page/src/js/navigation.js
@@ -50,12 +50,11 @@ function init () {
   let isDarkened = false;
   let darkenClassName = 'darken';
   let useMethod;
-  let lastScrollTop = 0;
+  let scrollTop = 0;
+  let mouseY = 1000;
 
   function fixNavClass () {
-    let scrollTop = getScrollTop();
-    let isNeedDarken = scrollTop > distance;
-    // let isNeedDarken = lastScrollTop > scrollTop && scrollTop > distance;
+    let isNeedDarken = mouseY < 200 || scrollTop > distance;
     let isNeedChange = isNeedDarken !== isDarkened;
     if (isNeedChange) {
       isDarkened = isNeedDarken;
@@ -63,14 +62,18 @@ function init () {
 
       utils[useMethod](nodeNav, darkenClassName);
     }
-    lastScrollTop = scrollTop;
   }
 
   window.onscroll = function () {
+    scrollTop = getScrollTop();
     fixNavClass();
     clearTimeout(scrollDelay);
     scrollDelay = setTimeout(checkBackTop, 100);
   };
+  window.onmousemove = function (e) {
+    mouseY = e.clientY;
+    fixNavClass();
+  };
   utils.bind(nodeBackTop, 'click', function () {
     nodeBody.scrollTop = 0;
   });