title: Find the largest number from a string using a regular expression
body: <p>I have a variable string like:</p>
  
  <pre><code>var myString = "857nano620348splitted3412674relation5305743";
  </code></pre>
  
  <p>How do I find the largest number from this?</p>
  
  <p>I have tried like the below without any success.</p>
  
  <pre><code>var matches = myString.match(/d+/g);
  </code></pre>