Check if all required inputs are filled and submit form automatically
<p>In my form I want that when all required fields (<code>.required-entry</code>) are filled, automatically submit form without clicking on submit button.</p>

<pre><code>&lt;div id="billing-form"&gt;
    &lt;fieldset&gt;
        &lt;div class="field form-group"&gt;
            &lt;input type="text" class="input-text form-control required-entry" id="name" /&gt;
        &lt;/div&gt;
        &lt;div class="field form-group"&gt;
            &lt;input type="text" class="input-text form-control required-entry" id="mid-name" /&gt;
        &lt;/div&gt;
    &lt;/fieldset&gt;
&lt;/div&gt;
&lt;div class"button-container"&gt;
    &lt;button type="button" title="Continue" id="btn-continue" class="button btn-continue" onclick="billing.save()"&gt;Continue&lt;/button&gt;
&lt;/div&gt;
</code></pre>