title: Send a variable to HTML with express sendfile (short question)
body: <p>I'm using Node.JS, path, and express to run an HTML webpage and need to send a variable to the HTML for its use:</p>
  
  <pre><code>var client_cred_access_token = 'fakeToken';
  
  ...
  
  app.get('/', function (req, res) {
      res.sendFile(path.join(__dirname, '/public', 'homepage.html'));
  });
  </code></pre>
  
  <p>How can I send this string variable to homepage.html?</p>