<!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(){
$("img").click(function(){
if($(this).attr("class") == "enlarge"){
$(this).removeClass("enlarge");
}
else{
$(this).addClass("enlarge");
}
});
//下の記述でも可
/*
$("img").click(function(){
if($(this).hasClass("enlarge")){
$(this).removeClass("enlarge");
}
else{
$(this).addClass("enlarge");
}
});
*/
//下の記述でも可
/*
$("img").toggle(function(){
$(this).removeClass("enlarge");
},function(){
$(this).addClass("enlarge");
});
*/
//下の記述でも可
/*
$("img").click(function(){
$(this).toggleClass("enlarge");
});
*/
});
</script>
<style>
img{
display:block;
width:200px;
height:200px;
cursor:pointer;
/*これらを記述するとアニメーションが加わります*/
/*
-moz-transition-property:width, height;
-webkit-transition-property:width, height;
-o-transition-property:width, height;
-ms-transition-property:width, height;
-moz-transition-duration:500ms;
-webkit-transition-duration:500ms;
-o-transition-duration:500ms;
-ms-transition-duration:500ms;
-moz-transition-timing-function:ease-in-out;
-webkit-transition-timing-function:ease-in-out;
-o-transition-timing-function:ease-in-out;
-ms-transition-timing-function:ease-in-out;
*/
}
.enlarge{
display:block;
width:400px;
height:400px;
cursor:pointer;
}
</style>
</head>
<body>
<p>
img要素をクリックして、交互に拡大、縮小しなさい。
</p>
<img src="img/enlarge.png" class="enlarge">
</body>
</html>