这个dom2级的封装也叫事件绑定。通常我都不会像老师这样封装。function myAddEvent(obj,ev,fn) {
if (obj.attachEvent)
{
obj.attachEvent("on"+ev,fn)
}
else
{
obj.addEventListener(ev,fn,false)
}
}
if (obj.attachEvent)
{
obj.attachEvent("on"+ev,fn)
}
else
{
obj.addEventListener(ev,fn,false)
}
}
2016-10-26