save-by-href

@@ -272,22 +272,19 @@ $(function() {
     // tab
     tabInit();
 
-    if (localStorage) {
-        if (document.referrer && document.referrer.indexOf('activity.yoho.cn') > -1) {
-            localStorage.removeItem('changtu1');
-        }
-
+    if (sessionStorage) {
         // 微信中点击之后，返回跳到指定位置
         let totalH, scH;
-        let top = localStorage.changtu1;
+        let key = `PAGE_SCROLL_TOP_${location.href}`;
+        let top = sessionStorage.getItem(key);
 
         window.scrollTo(0, top);
-        localStorage.removeItem('changtu1');
+        sessionStorage.removeItem(key);
 
         $('a').click(function() {
             totalH = event.pageY;
             scH = event.clientY;
-            localStorage.changtu1 = totalH - scH; // 每次点击缓存高度
+            sessionStorage.setItem(key, totalH - scH); // 每次点击缓存高度
         });
     }