iScroll中事件点击触发两次解决方案

//处理之前
<span onclick="test()">双击测试</span>
//处理之后
<span onclick="void(0)">双击测试</span>

that.doubleTapTimer = setTimeout(function () {
                            that.doubleTapTimer = null;
                            // Find the last touched element
                            target = point.target;
                            while (target.nodeType != 1) target = target.parentNode;
                            if (target.tagName != 'SELECT' && target.tagName != 'INPUT' && target.tagName != 'TEXTAREA') {
                                ev = doc.createEvent('MouseEvents');
                                ev.initMouseEvent('click', true, true, e.view, 1,
                                    point.screenX, point.screenY, point.clientX, point.clientY,
                                    e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,
                                    0, null);
                                ev._fake = true;
                                target.dispatchEvent(ev);
                                /以下代码为新增代码/
                                //找到绑定click事件的元素。
                                var obj = $(target).attr("onclick") != null ? $(target) : $(target).parents("[onclick]")[0];
                                if (obj != null) {
                                    var clickContent = $(obj).attr("onclick");
                                    if (clickContent != "void(0)") {
                                        //利用新的属性来存储原有的click函数
                                        $(obj).attr("data-clickbak", $(obj).attr("onclick"));
                                        //改变onclick属性值。
                                        $(obj).attr("onclick", "void(0)");
                                        //防止暴力点击
                                        if (that.hashBox.length>0) {
                                            for (var _i = 0; _i < that.hashBox.length; _i++)
                                            {
                                                if (that.hashBox[_i] == $(obj)) {
                                                    that.hashBox.splice(_i, 1);
                                                    break;
                                                }
                                            }
                                        } 
                                        that.hashBox.push($(obj));
                                        that._clickBack();
                                    }
                                }//end
                            }
                        }, that.options.zoom ? 250 : 0);

       hashBox: [],
       /还原被点击对象的事件/
        _clickBack: function () {
            var that = this;
            setTimeout(function () {
                if (that.hashBox.length > 0) {
                    var obj = that.hashBox.pop();
                    obj.attr("onclick", obj.attr("data-clickbak"));
                    if (that.hashBox.length > 0) that._clickBack();
                }
            }, 500);
        }