JQuery condition with blank input
<p>I need to do multiple checks in a jquery condition ...</p>

<p>I am looking for something like this:</p>

<p>IF checkbox_A is Checked then</p>

<p>If input_A is empty then alert('input_A is Required')</p>

<p>else Add a class="continue" to the div below.</p>

<pre><code>&lt;button id="btn1"&gt;Continue&lt;/button&gt;
</code></pre>

<p>Possible?</p>
