From aa20aa950d30572122240a5ecb4451803f8fe856 Mon Sep 17 00:00:00 2001
From: Wang Yuxing <396276123@qq.com>
Date: Thu, 10 Jul 2014 10:51:32 +0800
Subject: [PATCH] a problem : undefined

var swipe=(function(me){
   var test = 1;
   var undefined = 1;
// compare following situations:
   me.test1 = (test !== undefined);  //false
   me.test2 = (typeof test !== 'undefined');   // true
   return me;
   }(swipe||{})
);
alert(swipe.test1);
alert(swipe.test2);
---
 swipe.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/swipe.js b/swipe.js
index 8b29717..d0ed89f 100644
--- a/swipe.js
+++ b/swipe.js
@@ -20,7 +20,7 @@ function Swipe(container, options) {
     touch: ('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch,
     transitions: (function(temp) {
       var props = ['transitionProperty', 'WebkitTransition', 'MozTransition', 'OTransition', 'msTransition'];
-      for ( var i in props ) if (temp.style[ props[i] ] !== undefined) return true;
+      for ( var i in props ) if (typeof temp.style[ props[i] ] !== 'undefined') return true;
       return false;
     })(document.createElement('swipe'))
   };
@@ -32,7 +32,7 @@ function Swipe(container, options) {
   options = options || {};
   var index = parseInt(options.startSlide, 10) || 0;
   var speed = options.speed || 300;
-  options.continuous = options.continuous !== undefined ? options.continuous : true;
+  options.continuous = typeof options.continuous !== 'undefined' ? options.continuous : true;
 
   function setup() {