nmlgko,
открывашка 216 делегирование
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
.checkbox {
display: none;
}
.title {
cursor: pointer;
}
</style>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script>
$(function()
{
$(".hidden").on("click", ".title", function(event)
{
$('.checkbox', event.delegateTarget).toggle();
}
);
}
);
</script>
</head>
<body>
<h1>vfvfvfvf</h1>
<div class="filter-box">
<div class="hidden">
<strong class="title">rrrrr</strong>
<div class="checkbox">
<ul>
<li>111</li>
<li>222</li>
<li>333</li>
</ul>
</div>
</div>
<div class="hidden">
<strong class="title" >qqqqq</strong>
<div class="checkbox">
<ul>
<li>456</li>
<li>789</li>
<li>123</li>
</ul>
</div>
</div>
<div class="hidden">
<strong class="title" >ffffff</strong>
<div class="checkbox">
<ul>
<li>147</li>
<li>2258</li>
<li>36598</li>
</ul>
</div>
</div>
<div class="hidden">
<strong class="title" >ssssss</strong>
<div class="checkbox">
<ul>
<li>dddd111</li>
<li>222dddd</li>
<li>333aaaa</li>
</ul>
</div>
</div>
</div>
</body>
</html>