JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/handlebars.js/1.0.0/handlebars.min.js"></script>
<script type="x-handlebars" id="template">
  {{#if foo}}
    Bar: {{bar}}
    ../Bar: {{../bar}}
    {{/if}}
</script>

<div id="output">
</div>

JavaScript

var data = {
    foo: 'foo1',
    bar: 'bar1'
};

var template = Handlebars.compile(document.getElementById('template').innerText)
document.getElementById('output').innerText = template(data);