要實(shí)現(xiàn)的效果是在ie，chrome，firefox下監(jiān)聽(tīng)滾輪觸發(fā)事件。源碼：window.onscroll=function(e){
var e =e || window.event;
var scrolltop=document.documentElement.scrollTop||document.body.scrollTop;var box = $('#qa-head');if(document.body.scrollTop >= 400){
box.addClass('fixed-head');
}else{
box.removeClass('fixed-head');
}
}模擬onscroll效果if(document.addEventListener){
document.addEventListener('DOMMouseScroll',scrollFunc,false);
}window.onmousewheel=document.onmousewheel=scrollFunc;//IE/Opera/Chromevar scrollFunc=function(e){
e=e || window.event; var t1=document.getElementById("qa-head"); if(t1.detail >= 400){
t1.addClass('fixed-head'); console.log('firefox');
}else{
t1.removeClass('fixed-head'); console.log('firefox lll');
}
}但是火狐模擬onscroll的這段代碼控制臺(tái)都沒(méi)有輸出，是什么原因哪里錯(cuò)了？
firefox怎么監(jiān)聽(tīng)鼠標(biāo)滾輪滾動(dòng)，這個(gè)兼容性問(wèn)題怎么解決？
忽然笑
2018-08-10 11:10:01
