title: Accessing any string type element inserted within multiple arrays
body: <p>Suppose I have an array:</p>
  <pre><code>let x = [[[&quot;3&quot;]]];
  </code></pre>
  <p>I can access easily to the inserted element without using object notation by simply writing</p>
  <pre><code>parseInt(x); // 3
  </code></pre>
  <p>But if we</p>
  <pre><code>let x = [[[&quot;a&quot;]]];
  </code></pre>
  <p>There is no number within multiple arrays in x, so how can we access (&quot;a&quot;) directly in one step, like <code>parseInt()</code> for above situation. Is there any way, then suggest?</p>