Useful Handlebars Helpers. Get specific array item, if equals filter

handlebars-helpers-templates.html

<script id="if_equals_example" type="text/x-handlebars-template">
  {{#if_equals objectType 'message'}}
    <div class="message">
    Message
    </div>
  {{else}}
    
  {{/if_equals}}
</script>

<script id="array_item_example" type="text/x-handlebars-template">
  <span class="first-friend-name">{{#array_item friends 0}}{{firstName}} {{lastName}}{{/array_item}}</span>
</script>

<script id="each_upto_example" type="text/x-handlebars-template">
  <ul>
    {{#each_upto friends 3}}
      <li class="item item-{{@itemIndex}}"></li>
    {{/each_upto}}
  </ul>
</script>

handlebars-helpers.js

Handlebars.registerHelper('if_equals', function(conditional, value, options) {
  if (conditional === value){
    return options.fn(this);
  } else {
    return options.inverse(this);
  }
});

Handlebars.registerHelper('array_item', function(array, index, options) {
  return options.fn(array[index]);
});

/**
 * @param ary {Array}
 * @param max {Number} The max number of items to display from the array
 * @param [options.skip] {Number=0} Optional. Number of items to skip in the array
 */
Handlebars.registerHelper('each_upto', function(ary, max, options) {
  if(!ary || ary.length == 0)
      return options.inverse(this);

  var result = [],
    skip = (options.hash ? (options.hash.skip ? options.hash.skip : 0) : 0),
    i = skip;

  max += skip;

  for(; i < max && i < ary.length; ++i) {
    result.push(options.fn(ary[i], { data : { itemIndex : i } } ));
  }
      
  return result.join('');
});