JS Event Object Eventutil

1 varEventutil = {2GetEvent:function(event) {//Get Event Object3         returnEvent?event:window.event;4     },5AddHandler:function(element, type, handler) {//Binding Events6         if(element.addeventlistener) {7Element.addeventlistener (type, Handler,false);8}Else if(element.attachevent) {9Element.attachevent ("on" +type, handler);Ten}Else { OneElement["on" + type] =handler; A              -         } -     }, theRemoveHandler:function(element, type, handler) {//Remove Bindings -         if(element.removeeventlistener) { -Element.removeeventlistener (Type,handler,false); -}Else if(element.detachevent) { +Element.detachevent ("On" +type,handler,false); -}Else{ +element["on" +type] =NULL; A         } at     }, -Preventdefault:function(event) {//Block Default Events -         if(event.preventdefault) { - Event.preventdefault (); -}Else{ -Event.returnvalue =false; in         } -     }, toStoppropagation:function(event) {//Block Event bubbling +         if(event.stoppropagation) { - event.stoppropagation (); the}Else{ *Event.cancelbubble =true; $         }Panax Notoginseng     }, -Getrelatetarget:function(event) {//information about event-related elements the         if(event.relatedtarget) { +             returnEvent.relatedtarget; A}Else if(event.toelement) { the event.toelement; +}Else if(event.fromelement) { -             returnevent.fromelement; $}Else{ $             return NULL; -         } -     }, theGetbutton:function(event) {//Detecting Button Properties -         if(Document.implementation.hasFeature ("Mouseevents", "2.0")){Wuyi             returnEvent.button; the}Else{ -             Switch(Event.button) { Wu                  Case0: -                  Case1: About                  Case3: $                  Case5: -                  Case7: -                         return0;//primary mouse button -                  Case2: A                  Case6: +                         return2;//Secondary mouse button the                  Case4: -                         return1;//Mouse wheel Button $             } the         } the     }, theGetwheeldelta:function(event) {//Mouse Scrolling property values the         if(Event.wheeldelta) { -             return(Client.engine.opera && client.engine.opera <9.5?-Event.wheelDelta:event.wheelDelta) in}Else{ the             return-event.detail *40; the         } About     }, theGetcharcode:function(event) {//Get character encoding the         if(typeofEvent.charcode = = "Number"){ the             returnEvent.charcode; +}Else{ -             returnEvent.keycode; the         }Bayi     }, theGetcilpboardtext:function(event) {//Get Clipboard contents the         varCilpboarddata = (Event.clipboarddata | |window.clipboarddata); -         returnClipboarddata.getdata ("Text"); -     }, theSetclipboardtext:function(Event,value) {//cut to shear plate the         if(event.clipboarddata) { the             returnEvent.clipboardData.setData ("Text/plain", value); the}Else if(window.clipboarddata) { -             returnWindow.clipboardData.setData ("Text", value); the         } the     } the 94  the}

The code is summarized in the JavaScript Advanced Programming Events section.