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                <script type="text/template" id="main-template">
   Цикл из массива items.
  <% _.forEach(items, function(item, index) { %>
  <div class="item">
    (<%- index %>) <%- item %>
  <% }); %>

    Используя внутри шаблона javascript методы, обязательно ставьте точку с запятой (;).
    <% console.log(items); %>
    Но если вызываем функцию которая возвращает значение то точка с запятой не ставится и в разделитель добавляется знак равно (=).
    <%= textUpperCase('text') %>
    => TEXT

    Операторы сравнения.
    <% if (true) { %>
    <% }else{ %>
    <% } %>
    <% if (true) { %>
      Только истина
    <% } %>

  Использование кода в атрибутах.
  <% _.forEach(items, function(item, index) { %>
  <div class="item" data-inex="<%- index %>">
    <%- item %>
  <% }); %>

<div id="main"></div>




                // Функция делает все буквы заглавными
function textUpperCase(text) {
  return text.toUpperCase();

var compiled = _.template($('#main-template').html());
    'items': ['first', 'second']