JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://underscorejs.org/underscore-min.js"></script>
<script type='text/template' id='src'>
<ul>    
    <% _.each(letters, function(letter) { %>
        <li><%= letter %></li>
    <% }); %>
</ul>    
</script>

JavaScript

var alphas = _.range(
    'a'.charCodeAt(0),
    'z'.charCodeAt(0)+1
);

var letters = _.map(alphas, a => String.fromCharCode(a));

/*
var letters = _.map(alphas, function(a) {
	return String.fromCharCode(a);
});
*/

var tpl = _.template($('#src').html());
$('body').append(tpl({
    letters : letters
}));