jQuery keyUp on Page Load
<p>I have a input element that has a keyup event, any number greater than will show a div.</p>

<p>This works if a human types into the textfield.  However, how do I achieve the keyup on page load if I am setting the value via JS?</p>

<pre><code>&lt;input id="this_field"&gt;
</code></pre>

<p>JS on page load:</p>

<pre><code>$('#this_field').val('4'); //Now I want the keyup to be event to be triggered.
</code></pre>

<p>I know I can wrap the keyup in a function and call it right after setting the value, however is there a way to trigger the keyup?</p>
