js实现的仿Photoshop鼠标滚轮控制输入框取值(修正兼容Chrome)

/*注册事件*/
if(document.attachEvent){
document.attachEvent('onmousewheel',scrollFunc);
}else if(document.addEventListener){
document.addEventListener('DOMMouseScroll',scrollFunc,false);
}

/*注册事件*/
if(document.addEventListener){
document.addEventListener('DOMMouseScroll',scrollFunc,false);
}//W3C
window.onmousewheel=document.onmousewheel=scrollFunc;//IE/Opera/Chrome