title: Updating a redis client hash
body: <p>I would like to update and add an item to the redis hash session entry.</p>
  
  <p>I have been able to create a hash using the redis client using the code below:</p>
  
  <pre><code>var redis = require('redis');
  var client = redis.createClient(); //creates a new client
  
  client.on('connect', function() {
      console.log('connected');
  });
  
  client.hmset('frameworks', {
      'javascript': 'AngularJS',
      'css': 'Bootstrap',
      'node': 'Express'
  });
  </code></pre>
  
  <p>Is there a way of adding to this hash? I would like to change and also to update an existing hash element. </p>
  
  <p>Is this possible without reading everything and creating a new hash with updated and new hash elements.</p>
  
  <p>I am using this webpage as a tutorial guide : <a href="https://www.sitepoint.com/using-redis-node-js/" rel="nofollow noreferrer">https://www.sitepoint.com/using-redis-node-js/</a></p>