How to use markdown(or any other markup -> HTML language) in a template. Is it possible with available JavaScript template engines?
Template:
This is a *sample* question?

{{screenshot}}
I leave you a snippet that uses Mustache as template engine and the JavaScript implementation of CommonMark for Markdown.
In the links above you can find the code that I used for the example.
function loadUser() {
var template = $('#template').html();
var rendered = Mustache.render(template, {
name: "*Luke*"
});
$('#target').html(rendered);
var reader = new commonmark.Parser();
var writer = new commonmark.HtmlRenderer();
var parsed = reader.parse($('#target').html());
var result = writer.render(parsed);
$('#target').html(result);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/mustache.js/3.0.0/mustache.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/commonmark/0.28.1/commonmark.min.js"></script>
<body onload="loadUser()">
<div id="target">Loading...</div>
<script id="template" type="x-tmpl-mustache">
This is an example of **markdown** in a *template*.
Hello {{ name }}!
</script>
</body>