Why is an emoji string length 2? : <p>I am trying to understand how emojis work and the other thing is how does any textarea in my browser handle a seemingly 2 chars represented as one?</p>

<p>For example:</p>

<pre><code>"👍".length
// -&gt; 2
</code></pre>

<p>More examples here: 
<a href="https://jsbin.com/zazexenigi/edit?js,console" rel="noreferrer">https://jsbin.com/zazexenigi/edit?js,console</a></p>
