erent kinds of values can be used.
The earlier error about <code>obj.heigth</code> was not an error about the <em>syntax</em> of the program, but instead an error about using a kind of value (a <em>type</em>) in an incorrect way.</p>
<p>As another example, this is JavaScript code you can run in a browser that <em>will</em> print a value:
<pre class="typescript-code"><span class="tm-typ">console</span>.<span class="tm-mth">log</span>(<span class="tm-num">4</span> / []);</pre></p>
<p>This syntactically-legal 