Untitled


<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>plus/minus</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>
$(".plus").click(function() {
    var item = $(this).parent().find("input");
    item.val(Number(item.val()) + 1);
});
$(".minus").click(function() {
    var item = $(this).parent().find("input");
    item.val(Number(item.val()) - 1);
});
</script>
</head>

<body>
<span>
<span class="minus"><img src="https://lt.tonybet.com/assets/shared/mikro_tv-50ee396d59d5c38f979ad3fd93578f4f.png"></span>
<input type="number" class="numbertype" value="10">
<span class="plus"><img src="https://lt.tonybet.com/assets/shared/mikro_tv-50ee396d59d5c38f979ad3fd93578f4f.png"></span>
</span>
</body>
</html>