Revealing Module Pattern in Javascript

main.js

var people = (function(){
    var people = ['Will', 'Steve'];

    //cache DOM
    var $el = $('#peopleModule');
    var $button = $el.find('button');
    var $input = $el.find('input');
    var $ul = $el.find('ul');
    var template = $el.find('#people-template').html();

    //bind events
    $button.on('click', addPerson);
    $ul.delegate('i.del', 'click', deletePerson);

    _render();

    function _render() {
       $ul.html(Mustache.render(template, {people: people}));
    }

    function addPerson(value) {
        var name = (typeof value === "string") ? value : $input.val();
        people.push(name);
        _render();
        $input.val('');
    }

    function deletePerson(event) {
        var i;
        if (typeof event === "number") {
            i = event;
        } else {
            var $remove = $(event.target).closest('li');
            i = $ul.find('li').index($remove);
        }
        people.splice(i, 1);
        _render();
    }

    return {
        addPerson: addPerson,
        deletePerson: deletePerson
    };

})();

//people.addPerson("Jake");
//people.deletePerson(0);

revealing_module_pattern.html

<div id="peopleModule"><h1>People</h1>
            <input placeholder="name" type="text">
            <button id="addPerson">Add Person</button>
            <ul id="people">
                <script id="people-template" type="text/template">
                    {{#people}}
                        <li>
                            <span>{{.}}</span>
                            <i class="del">X</i>
                        </li>
                    {{/people}}
                </script>
            </ul>

        </div>

Based on Modular Javascript #3 - Revealing Module Pattern Javascript Tutorial (Youtube)
https://youtu.be/pOfwp6VlnlM?list=PLoYCgNOIyGABs-wDaaxChu82q_xQgUb4f