<div class="block">
<div class="item"></div>
</div>
<div class="block">
<div class="item"></div>
</div>
<div class="block">
<div class="item"></div>
</div>
$('.block').on('click', function(){
$('.item').show();
});
$('.block').on('click', function() {
$(this).find('.item').show();
});