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How to use parentNode to close QR code

一个新手
Release： 2017-09-06 13:25:44
Original
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<style type="text/css" >
.box{
    margin:100px auto;      
    position: relative;      
    width: 107px;    
}   
#X{
    border:1px solid #D9D9D9 ;      
    width:14px;      
    height:14px;
    line-height: 14px;      
    color: #D6D6D6;      
    cursor:pointer;      
    position: absolute;      
    top:20px;      
    left: 0;
  }
</style>
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<html>
　　<p clas="box">
　　　　<img>
　　　　<span id="X">X</span>
　　</p>
</html>
<script>
　　
var clo=document.getElementById("X");
clo.onclick=function(){this.parentNode.style.display="none";}
</script>
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