<head>
<meta charset="utf-8">
</head>
<body>
<span id="cap_map">показать</span>
<div class="cap_site_map"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
var zzz = '<script charset="utf-8" src="https://api-maps.yandex.ru/services/constructor/1.0/js/?sid=vcnFFhOJuYXv6CT5peVIb3cADSfa6GLS&width=600&height=450&lang=ru_RU&sourceType=constructor" type="text/javascript"><\/script>';
$( "#cap_map" ).click(function() {
$('.cap_site_map').html(zzz);
});
</script>
</body>