<!DOCTYPE html>
<html lang="ja-JP">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,user-scalable=yes,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.5">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>
$(function(){
$("#first").click(function(){
$(this).removeAttr("id").addClass("enlarge").attr("src","img/after.png");
});
});
</script>
<style>
#first{
cursor:pointer;
}
.enlarge{
position:fixed;
top:50%;
left:50%;
width:400px;
height:400px;
margin-top:-200px;
margin-left:-200px;
}
</style>
</head>
<body>
<img id="first" src="img/before.png">
<img src="img/before.png">
<img src="img/before.png">
</body>
</html>
アニメーションを使った例
<!DOCTYPE html>
<html lang="ja-JP">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,user-scalable=yes,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.5">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>
$(function(){
$("#first").click(function(){
$(this).removeAttr("id").addClass("enlarge").attr("src","img/after.png");
});
});
</script>
<style>
#first{
cursor:pointer;
position:absolute;
top:20px;
left:20px;
}
#second{
position:absolute;
top:20px;
left:240px;
}
#third{
position:absolute;
top:20px;
left:460px;
}
.enlarge{
-webkit-animation-name:move;
-webkit-animation-iteration-count:1;
-webkit-animation-timing-function:lineart;
-webkit-animation-duration:1s;
-webkit-animation-direction:alternate;
position:absolute;
top:50%;
left:50%;
width:400px;
height:400px;
margin-top:-200px;
margin-left:-200px;
z-index:4;
}
@-webkit-keyframes move {
0%{
top:5%;
left:5%;
width:200px;
height:200px;
margin-top:0;
margin-left:0;
z-index:4;
}
100%{
top:50%;
left:50%;
width:400px;
height:400px;
margin-top:-200px;
margin-left:-200px;
z-index:4;
-webkit-transform:rotate(360deg);
}
}
</style>
</head>
<body>
<img id="first" src="img/before.png">
<img id="second" src="img/before.png">
<img id="third" src="img/before.png">
</body>
</html>