How can I determine the type of an HTML element in JavaScript?

Question

I need a way to determine the type of an HTML element in JavaScript. It has the ID, but the element itself could be a

, a

f

Answer 1

You can use generic code inspection via instanceof:

var e = document.getElementById('#my-element');
if (e instanceof HTMLInputElement) {}         // 
elseif (e instanceof HTMLSelectElement) {}    // 
elseif (e instanceof HTMLTextAreaElement) {}  // elseif (  ... ) {}                            // any interface
</code></pre>

<p>Look here for a complete list of interfaces.</p>
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