下载链接 添加union_type

@@ -119,6 +119,7 @@
     <a class="yoho-coin" href="javascript:;" data-token="2aa1d0c6e83f027327d8461063f4ac58a6">
         <img src="http://img02.yohoboys.com/staticimg/2016/04/22/14/02a8b1c09363f84c34aa56d11bb5cd7eb4.png">
     </a>
+    <a class="anchor" href='http://union.yoho.cn/union/downapp.html'></a>
     <input id="imgwh" type="hidden" name="" value="200x300">
     <div class="feature-product-info">
         <a class="product-brand" href="xxx">

@@ -23,7 +23,33 @@ const mycurrency = isMobile.any() ? '//m.yohobuy.com/home/mycurrency' : '//www.y
 const $tipTmpl = $('<div class="featuretip tip-wrap"><div class="tip"><div class="title"></div><div class="content"></div><a class="button" href="">返回</a></div></div>'); // eslint-disable-line
 const $cointipTmpl = $('<div class="feature-coin tip-wrap"><div class="tip"><div class="tip-close">&times;</div><div class="title"></div><div class="content"></div><div class="bottom-button"><a class="button" href="">去逛逛</a><a class="coin" href=\'' + mycurrency + '?openby:yohobuy＝{"action":"go.mine"}\'>查看有货币</a></div></div></div>'); // eslint-disable-line
 
-let _initEvent = function() {
+let _queryString = function() {
+    if (!window._jssdkQS) {
+        let vars = {},
+            hash,
+            i,
+            hashes = window.location.search.slice(1).split('&');
+
+        for (i = 0; i < hashes.length; i++) {
+            hash = hashes[i].split('=');
+            vars[hash[0]] = hash[1];
+        }
+
+        window._jssdkQS = vars;
+    }
+
+    return window._jssdkQS;
+};
+
+let _sParamByIframe = function() {
+    let search = window.location.search;
+    if (search.indexOf('&expires=') === -1) {
+        search = search + '&expires=' + (24 * 60 * 60 * 1000);
+    }
+    $('<iframe style="display:none;" src="//m.yohobuy.com/activity/wechat/1111' + search + '"></iframe>').prependTo('body');
+};
+
+let _bindEvent = function() {
     let $body = $('body');
     $body.on('click', '.feature-coin .close,.feature-coin .tip-close', function(e) {
         $cointipTmpl.fadeOut();
@@ -47,41 +73,39 @@ let _initEvent = function() {
     });
 };
 
+let _bindUnionType = function() {
+    let qs = _queryString();
+    let union_type =  qs.mkt_code || qs.union_type;
+
+    if (union_type) {
+        $('a').each(function(indx, el) {
+            el = $(el);
+            let h = el.attr('href');
+            if (h.indexOf('union.yoho.cn/union/downapp.html') > -1) {
+                el.attr('href', h + '?union_type=' + union_type);
+            }
+        });
+    }
+};
+
 export default {
+    queryString: _queryString,
     init() {
         //发送活动页参数
-        let search = window.location.search;
-        if (search.indexOf('&expires=') === -1) {
-            search = search + '&expires=' + (24 * 60 * 60 * 1000);
-        }
-        $('<iframe style="display:none;" src="//m.yohobuy.com/activity/wechat/1111' + search + '"></iframe>').prependTo('body');
+        _sParamByIframe();
 
         // 绑定事件
-        _initEvent();
+        _bindEvent();
+
+        // 下载链接绑定union_type
+        _bindUnionType();
     },
     isApp() {
-        let qs = this.queryString();
+        let qs = _queryString();
         let isApp = !!qs.app_version || (qs.openrefer === 'app' && qs.uid);
 
         return !!isApp;
     },
-    queryString() {
-        if (!window._jssdkQS) {
-            let vars = {},
-                hash,
-                i,
-                hashes = window.location.search.slice(1).split('&');
-
-            for (i = 0; i < hashes.length; i++) {
-                hash = hashes[i].split('=');
-                vars[hash[0]] = hash[1];
-            }
-
-            window._jssdkQS = vars;
-        }
-
-        return window._jssdkQS;
-    },
     image(url, width, height, mode, quality) {
         mode = !isNaN(Number(mode)) ? mode : 2;
         url = url || '';