update undefined

@@ -47,11 +47,13 @@ function setLazyLoadAndMellipsis($infos) {
  * @params $container 逛资讯列表容器
  */
 function initInfosEvt($container) {
+    var cHammer;
+
     if (typeof $container === 'undefined') {
         return;
     }
 
-    var cHammer = new Hammer($container[0]);
+    cHammer = new Hammer($container[0]);
 
     cHammer.on('tap', function(e) {
         var $this = $(e.target),