How to get text between underscore and dot in javascript
<p>If I have a string like below:</p>

<pre><code>1603202_15.jpg
</code></pre>

<p>I want to extract the text between the <code>_</code> and the <code>.</code>. Note that the string can have an arbitrary number of underscores in it, but there will only be one dot in it.</p>
