title: How call a function like this $(a()) in another function?
body: <p>I have function called <code>xyz</code>. How can I call this function from another called <code>a</code>?</p>
  
  <pre><code>$(function xyz() {    
    sum(1 + 2);    
  });
  
  function b() {
    xyz();
  }
  </code></pre>