var EventUtil = { addHandler:function(element,type,handler){ if(element.addEventListener){ element.addEventListener(type,handler,false); }else if(element.attachEvent){ element.attachEvent("on"+type,handler); }else{ element["on"+type] = handler; } }, removeHandler:function(element,type,handler){ if(element.removeEventListener){ element.removeEventListener(type,handler,false); }else if(element.detachEvent){ element.detachEvent("on"+type,handler); }else{ element["on"+type] = null; } } }; var handler={ message:"Event handled", handleClick:function(event){ alert(this.message); } }; var btn=<愛(ài)尬聊_知識(shí)大全>document.getElementById("btn"); EventUtil.affffdHandler(btn,"click",bind(handler.handleClick,handler));

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陳聰 2022-09-08 12:03

bind is no defined; bind沒(méi)有定義,不是說(shuō)得很明顯了么

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浪仔_lee 2022-09-08 12:19

最后一行bind函數(shù)沒(méi)有定義

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