/*window.onload = function(){ alert('a'); alert('b'); alert('c'); };*/ /*addEvent(window,'load',function(){ alert('a'); }); addEvent(window,'load',function(){ alert('a'); }); addEvent(window,'load',function(){ alert('a'); }); window.onload = function(){ var oButton = document.getElementById(('btn'); addEvent(oButton,'click',fn); removeEvent(oButton,'click',fn); //addEvent(oButton,'click',fn); //addEvent(oButton,'click',fn); }; function fn(){ aler('button'); }*/ /* window.onload = function(){ var oButton = document.getElementById(('btn'); addEvent(oButton,'click',fn); //removeEvent(oButton,'click',fn); }; function fn(e){ //aler(e.clientX); alert(this.value); } function addEvent(obj,type,fn){ if (typeof obj.addEventListener != 'undefined'){//W3C obj.addEventListener(type,fn,false); }else if (typeof obj.attchEvent != 'undefined'){//IE obj.attachEvent('on' + type,function(){ fn.call(obj,window.event); }); } } function removeEvent(obj,type,fn){ if (typeof obj.removeEventListener != 'undefined'){//W3C obj.removeEventListener(type,fn,false); }else if (typeof obj.detachEvent != 'undefined'){//IE obj.detachEvent('on' + type,fn); } } */ //全局变量 // var id = 1; //属性 addEvent.ID = 1; function addEvent(obj,type,fn){ if (typeof obj.addEventListener != 'undefined'){//W3C obj.addEventListener(type,fn,false); }else{//IE addEvent.ID++; if (!obj.events){ obj.events = {}; } if (!obj.events[type]){ obj.events[type] = []; if (obj['on'+type]){ obj.events[type][0] = fn; }else{ if(addEvent.equal(obj.events[type],fn)){ return false; } } } obj.events[type][addEvent.ID++] = fn; obj['on'+type] = addEvent.exec; } } addEvent.exec = function(event){ var e = event||addEvent.fixEvent(window.event); for(var i in this.events[e.type]){ this.events[e.type][i].call(this,e); } } addEvent.equal = function(es,fn){ for(var i in es){ if(es[i] == fn){ return true; } } return false; } //ie event match W3C addEvent.fixEvent = function(event){ event.preventDefault = addEvent.fixEvent.preventDefault; event.stopPropagation = addEvent.fixEvent.stopPropogation; return event; } addEvent.fixEvent.preventDefault = function(){ this.returnValue = false; } addEvent.fixEvent.stopPropogation = function(){ this.returnValue = true;; } function removeEvent(obj,type,fn){ if (typeof obj.removeEventListener != 'undefined'){//W3C obj.removeEventListener(type,fn,false); }else {//IE for(var i in obj.events[type]){ if (obj.events[type][i] == fn){ delete obj.events[type][i]; } } } } window.onload = function(){ /*var oButton = document.getElementById(('btn'); addEvent(oButton,'click',fn1); //removeEvent(oButton,'click',fn1); addEvent(oButton,'click',fn2); //removeEvent(oButton,'click',fn2); addEvent(oButton,'click',fn3); //removeEvent(oButton,'click',fn3); */ var a = document.getElementById(('a'); addEvent(a,'click',function(e){ e.preventDefault(); //preDef(e); }); addEvent(oButton,'click',function(e){ e.stopPropogation(); //....do what you want }); addEvent(document,'click',function(){ //..do what you want }); }; function fn1(e){ alert('1' + this.value + e.clientX); } function fn2(e){ alert('2'); } function fn3(e){ alert('3'); }