在js高级程序设计书上，控制台上出现Uncaught ReferenceError: bind is 财富值87？

var EventUtil = { addHandler:function(element,type,handler){ if(element.优艾设计网_Photoshop交流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=document.getElementById("btn"); EventUtil.affffdHandler(btn,"click",bind(handler.handleClick,handler));

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旧巴黎坐看云海把昨日还给我前世 2022-09-08 14:07

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最后一行bind函数没有定义

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