Javascript - Auto click on a button on page load : <p>I am trying to auto click on a button with id btn on page load. This is my snippet.</p>

<pre><code>&lt;button id="btn"&gt;Click me&lt;/button&gt;
&lt;script&gt;
document.getElementById('btn').click();
    alert("h")
&lt;/script&gt;
</code></pre>

<p>How can I give an alert on page load? Pls help. Thanks.</p>
