var eventUntil = {
getEvent: function (event) {//获取事件
return event ? event : window.event
},
addHandler: function (element, type, handler) {//事件监听
if (element.addEventListener) {
element.addEventListener(type, handler, false);
} else if (element.attachEvent) {
element.attachEvent("on" + type, handler);
} else {
element["on" + type]
}
},
removeHandler: function (event) {//移除事件监听
if (element.removeEventListener) {
element.removeEventListener(type, handler, false);
} else if (element.detachEvent) {
element.detachEvent("on" + type, handler)
} else {
element["on" + type] = null
}
},
stopPropagation: function (event) {//阻止冒泡
if (event.stopPropagation) {
event.stopPropagation();
} else {
event.cancelBubble = true;
}
},
preventDefault: function (event) {//取消事件默认行为
if (event.preventDefault) {
event.preventDefault();
} else {
event.returnValue = false;
}
},
getTarget: function (event) {//获取事件目标
return event.target || event.srcElement
},
getWheelDelta: function (event) {//获取滚轮事件delta增量(opera9.5以下版本wheelDelta值相反)
if (event.wheelDelta) {
return (client.engine.opera && client.engine.opera < 9.5 ? -event.wheelDelta : event.wheelDelta)
} else {
return -event.detail * 40//firefox
}
}
};