title: Map array js - how to pass argument
body: <p>If I write map like this:</p>
  
  <pre><code>days=['m', 't'];
  days.map(paste(day));
  
  function paste(day) {
    alert(day)
  }
  </code></pre>
  
  <p>It doesn't work;</p>
  
  <p>How can i pass my argument day to function paste?</p>