添加嗅探css3属性方法&获取鼠标滚动值&fix销毁component时清理工作

src/Action.js

@@ -269,7 +269,10 @@ define(function (require) {
          * @method dispose
          */
         dispose: function () {
+            var body = document.getElementsByTagName('body')[0];
             this.data = null;
+            this.content = '';
+            body.remove(this.el);
             this.destroyEvents();
         }
     };

src/lib/util.js

@@ -136,5 +136,36 @@ define(function (require) {
         }
     };
 
+    /**
+     * 是否支持CSS3特定属性
+     * @param {string} property 待检测的属性
+     * @return {boolean}
+     */
+    util.isSupportCSS3 = function (property) {
+        // 目前兼容这些就可以了吧
+        var properties = [property, '-webkit-' + property, '-ms-' + property, '-moz-' + property, '-o-' + property];
+        var style = document.createElement('body').style;
+        for (var i = 0, l = properties.length; i < l; i++) {
+            if (style.hasOwnProperty(properties[i])) {
+                return true;
+            }
+        }
+        return false;
+    };
+
+    /**
+     * 获取鼠标滚动时的值
+     * @param  {Event} event 鼠标滚动时事件对象
+     * @return {number} 1:向上   -1:向下
+     */
+    util.getMouseScrollVal = function (event) {
+        event = event || window.event;
+        var val = event.originalEvent.wheelDelta
+            ? (event.originalEvent.wheelDelta > 0 ? 1 : -1)
+            : (-event.originalEvent.detail > 0 ? 1 : -1);
+
+        return val;
+    };
+
     return util;
 });