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<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<style type="text/css">
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<body>
<img src="https://api.fnkr.net/testimg/200x200/00a/fff/?text=A">
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<img src="https://api.fnkr.net/testimg/200x200/a00/fff/?text=C">
<br>
<button id="dn">display:none</button>
<button id="op">opacity:0</button>
<button id="vh">visibility:hidden</button>
<button id="reset">重設</button>
<script type="text/javascript">
$('#dn').click(function(){
$('#b').css('display','none')
});
$('#op').click(function(){
$('#b').css('opacity','0')
});
$('#vh').click(function(){
$('#b').css('visibility','hidden')
});
$('#reset').click(function(){
$('#b').css({
'display':'inline',
'opacity':'1',
'visibility':'visible'
});
});
</script>
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