title: Convert string with underscores to number with one function call in Chrome
body: <p>I have an interesting task for the job interview.</p>
  
  <p>String with numbers and underscores must be converted to the number with just one native function call. This code will work only in Chrome.</p>
  
  <pre><code>someFunc('1_22_333') = 122333;
  </code></pre>
  
  <p>Does anyone know what this function is? Maybe this is one of the new features?</p>