Handlebars Conditional Helper with Arguments

helper.js

Handlebars.registerHelper('if_task_state', function(options) {
	var states = options.hash.is.split(',')
	,	r      = false
	;

	_.each(states, function(state) {
		if (state == this.model.state)
			r = true;
	}, this);

	if (r)
		return options.fn(this);
	return options.inverse(this);
});

template.html

{{#if_task_state is="Pending"}}
	<p>Task is pending.</p>
{{else}}
	<p>Task is not pending.</p>
{{/if_task_state}}


{{#if_task_state is="Completed,Closed"}}
	<p>Task is completed <em>or</em> closed.</p>
{{/if_task_state}}