Mousewheel wheel event

Native scroll event: Firefox uses different events from other browsers

 /*  * Scroll wheel events are special only in Firefox. Use dommousescroll; Use mousewheel in other browsers ;*  */  //  Firefox Document. Body. addeventlistener ("dommousescroll ", Function  (Event ){  VaR Direction = event. Detail & (event. Detail> 0? "Mousedown": "mouseup" ); Console. Log (Direction );}); //  Chrome and IE Document. Body. onmousewheel = Function  (Event) {event = Event | Window. event;  VaR Direction = event. wheeldelta & (event. wheeldelta> 0? "Mouseup": "mousedown" ); Console. Log (Direction );}; 

 

Events with jquery compatibility

 //  Jquery-compatible scroll wheel events $ (Document). On ("mousewheel dommousescroll ", Function  (E ){ VaR Delta = (E. originalevent. wheeldelta & (E. originalevent. wheeldelta> 0? 1:-1) | //  Chrome & IE (E. originalevent. Detail & (E. originalevent. Detail> 0? -1: 1 )); //  Firefox          If (Delta> 0 ){  //  Roll up Console. Log ("wheelup" );}  Else   If (Delta <0 ){  //  Roll down Console. Log ("wheeldown" );}});