<div class="container"> <div class="col-md-6 col-md-offset-3"> <h1>Vue demo</h1>   </div> </div> <script> var h1=document.getElementsByTagName("h1")[0];   if(h1.addEventListener){ h1.addEventListener("click",fun1); }else if(h1.attachEvent){   h1.attachEvent("onclick",fun2); //h1.onclick=function(){alert(2)} };   function fun1(){alert("1")}; function fun2(){alert("2")};   </script>     注意:1、attachEvent监听事件中,加on 2、attachEvent用于ie8以及更低的ie版本
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