update nav

 {{# nav}}
-<nav class="outlet-nav">
+<nav class="outlet-nav" id="index_nav">
     <ul>
         {{#each data}}
             <li><a href="{{url}}">{{name}}</a></li>
         {{/each}}
-        <li><a href="outlet/willBeEnd">即将结束</a></li>
-        <li><a href="outlet/willBeCome">上线预告</a></li>
     </ul>
 </nav>
 {{/nav}}

@@ -2,7 +2,7 @@ var $ = require('yoho-jquery'),
     Swiper = require('yoho-swiper'),
     lazyLoad = require('yoho-jquery-lazyload');
 
-// var nav = require('./outlet/nav');
+var iscroll = require('./outlet/nav');
 
 require('./sale/search');
 
@@ -65,3 +65,12 @@ if (('.outlet-page').length > 0) {
 
 
 }
+
+// 导航滚动
+iscroll({
+    el: '#index_nav'
+}).goto($('#index_nav').find('.active').index());
+
+iscroll({
+    el: '#list-nav'
+}).goto(0);
\ No newline at end of file

 var $ = require('yoho-jquery'),
     IScroll = require('yoho-iscroll');
 
-var defaultOpt = {
-    navClass: '.outlet-nav'
-};
-
 // nav 滚动
 function initNavScroll(opt) {
     var $navBox,
+        iScroll,
+        _default = {
+            el: '.outlet-nav'
+        },
+        options;
 
-        // $lis,
-        iScroll;
+    options = $.extend({}, _default, opt);
+    $navBox = $(options.el);
 
-    $.extend(opt || {}, defaultOpt);
+    function scroll(index) {
+        var $ele;
 
-    $navBox = $(opt.navClass);
+        $ele = $navBox.find('li').eq(index);
+        if ($ele.length > 0) {
+            setTimeout(function() {
+                iScroll.scrollToElement($ele[0], 400);
+            }, 1);
+        }
+    }
 
-    // $lis = $navBox.find('li');
+    iScroll = new IScroll($navBox[0], {
+        scrollX: true,
+        scrollY: false
+    });
 
-    function scroll(ele) {
-        var offset;
+    return {
+        goto: scroll
+    };
+}
 
-        ele = ele || $navBox.find('li').eq(0)[0];
-        offset = -($navBox.find('ul').width() - 20) / 2;
+//获取url中的参数
+function getUrlParam(name) {
+    var reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)'); //构造一个含有目标参数的正则表达式对象
+    var r = window.location.search.substr(1).match(reg);  //匹配目标参数
 
-        setTimeout(function() {
-            iScroll.scrollToElement(ele, 400, offset);
-        }, 1);
+    //返回参数值
+    if (r !== null) {
+        return decodeURIComponent(r[2]);
+    } else {
+        return null;
     }
+}
 
-    $.each($navBox, function(index) {
-        iScroll = new IScroll($navBox[index], {
-            scrollX: true,
-            scrollY: false
-        });
-    });
+//选中顶部导航
+function activeNav() {
+    var $nav = $('#index_nav');
+    var index = getUrlParam('yh_channel');
 
-    // $navBox.on('click', 'li', function() {
-    //     var $this = $(this); // eslint-disable-line
-    //     var i = $this.index();
+    if (index === null) {
+        index = 0;
+    }
+    $nav.find('li').eq(index).addClass('active').siblings().removeClass('active');
+}
 
-    //     $lis.eq(i).addClass('active').siblings().removeClass('active');
-    //     scroll($this[0]);
-    // });
 
-    scroll($navBox.find('.active')[0]);
-}
+activeNav();
 
 module.exports = initNavScroll;