DOM2事件添加再删除怎么行不通呀，DOM0就行？
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// 添加事件监听 function addEvent(ele,type,handler){ if(ele.addEventListener){console.log('1') ele.addEventListener(type,handler,false); } else if(ele.attachEvent){console.log('2') ele.attachEvent('on'+type,handler); }else{console.log('3') ele['on'+type]=handler; } } // 删除事件监听 function removeEvent(ele,type,handler){ if(ele.removeEventListener){console.log('-1') ele.removeEventListener(type,handler,false); } else if(ele.detachEvent){console.log('-2') ele.detachEvent('on'+type,handler); }else{console.log('-3') ele['on'+type]=handler; } } //DOM2级添加事件 addEvent(drag,'mousedown',function(){ xPanel=event.clientX-panel.offsetLeft; yPanel=event.clientY-panel.offsetTop; addEvent(document,'mousemove',function(event){ dragPanel(event,xPanel,yPanel); }) addEvent(document,'mouseup',function(){ removeEvent(document,'mousemove',null); removeEvent(document,'mouseup',null); })})//DOM0级的 function dragDown(){ xPanel=event.clientX-panel.offsetLeft; yPanel=event.clientY-panel.offsetTop; document.onmousemove=function(event){ dragPanel(event,xPanel,yPanel); } // 释放鼠标 document.onmouseup=function(){ document.onmousemove=null; document.onmouseup=null; } } |
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