Logical expression
<p>Is there any difference between the below statements:</p>

<ol>
<li><code>if(newValue &amp;&amp; newValue != '')</code> and</li>
<li><code>if(newValue != '')</code></li>
</ol>

<p>I have observed expression 1 in many scripts but always got confused.</p>

<p>Please assist!</p>
