Extract vars from template

var template = 
	'<div class="row">' +
		'<div class="col-xs-2 col-sm-1 align-right">' +
	    	'<span class="{ icon_class }"></span>' +
	'</div>' +
	'<div class="col-xs-7 col-sm-9">' +
	    	'<p>{message}</p>' +
	    	'<time datetime=""><{when_created}</time>' +
	'</div>' +
	'<div class="col-xs-3 col-sm-2 align-right-fxd">' +
	    	'<img src="{image_url}" alt="">' +
	'</div>' 
;
var vars = template.match(/\{(.*?)\}/g).map(function(val){
  return $.trim(val.replace(/[\{|\}]/g,''));
});
console.log(vars);