document
.addEventListener("mousewheel",wheelHandler
);
document
.addEventListener("DOMMouseScroll",wheelHandler
)
function wheelHandler(e
){
var detail
;
if(e
.type
==="mousewheel"){
detail
=e
.wheelDelta
<0 ? -1 : e
.wheelDelta
>0 ? 1 : 0;
}else if(e
.type
==="DOMMouseScroll"){
detail
=e
.detail
>0 ? -1 : 1;
}
console
.log(detail
);
}
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