JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://unpkg.com/handlebars@latest/dist/handlebars.js"></script>
<!-- 
If you need a specific version:
<script src="https://unpkg.com/handlebars@4.3.0/dist/handlebars.js"></script> -->

<div id="output"></div>
<script type="template/handlebars" id="template">
{{message}}
</br>
{{#each numList as |num|}}
    {{num}} {{message}}
{{/each}}
</script>

JavaScript

var data =  {"message": "Hello World", numList: ["1"]}

var template = Handlebars.compile(document.getElementById('template').innerHTML);

document.getElementById('output').innerHTML = template(data);