For example, if I update <code>innerHTML</code> of a <code>div</code> after an AJAX call, how does the browser know that it&#39;s time to refresh/repaint the UI?
<pre><code>document.getElementById('someid').innerHTML = response.responseJSON.text;
</code></pre>In this case as soon as <code>innerHTML</code> is set, the change is visible on the UI. How exactly does it happen?

For example, if I update `innerHTML` of  a `div` after an AJAX call, how does the browser know that it's time to refresh/repaint the UI?

	document.getElementById('someid').innerHTML = response.responseJSON.text;

In this case as soon as `innerHTML` is set, the change is visible on the UI. How exactly does it happen?

How does the browser know when to repaint the UI?

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