title: JavaScript can't convert Hindi/Arabic numbers to real numeric variables
body: <p>I'm trying to use a DOM coming from an external source, and in it there are some numeric values in Hindi/Arabic transcription, like <code>&quot;۱۶۶۰&quot;</code>, and when I want to convert it into numeric value I get <code>NaN</code>.</p>
  <p>What's wrong here?</p>
  <p>A small code snippet to be tried:</p>
  <pre class="lang-js prettyprint-override"><code>alert(Number(&quot;۱۶۶۰&quot;) + ' - ' + Number(&quot;1660&quot;));
  </code></pre>