title: Nodejs - how to uninstall older version of nodejs and install new version of nodejs in ubuntu
body: <p>my react project need updated nodejs.
  so how i can reinstall my node js to latest version in Ubuntu 16.04.</p>
  
  <p><em>my current node version is</em> </p>
  
  <pre><code>node -v
  v6.0.0
  </code></pre>
  
  <p><em>my current npm version is</em></p>
  
  <pre><code>npm -v
  3.8.6
  </code></pre>
  
  <p>ideally i want to reinstall my nodejs, node &amp; npm to its newest version.</p>