Inject object data into string via templating

EasyTemplateEngine.js

var fillTemplate = function (str, obj) {
  var regex = /{{ *(\w+) *}}/g;
  return str.replace(regex, function(lit, key){
    if (!obj.hasOwnProperty(key)) return lit;
    return obj[key];
  })
}

// Example usage
var str = "<div><h1>{{ post_title }}</h1><small>{{ author }}</small><div>{{ content }}</div></div>";
var obj = {post_title: 'Hello, World', author: 'Morten Ege', content: 'This is a quick example of templates'};
var newStr = fillTemplate(str, obj);