title: Node js .replace() is not a function
body: <p>when I run this code in node js I get TypeError: filter_list.replace is not a function, I've tried using toString too but that doesn't seem to be helping, can anyone help?    </p>
  
  <pre><code>var filter_list =["abcd","efgh"];
  filter_list.join();
  return filter_list.replace(/,/g, ' AND filter:');
  </code></pre>