JavaScript check to see if a parameter is a HTML element

Looking to see how you go about checking to see if a parameter that is passed into a function is a HTML element like <div> or <p>, etc… I’ve tried numerous things but nothing is working:

if (param !== HTMLElement) return undefined;
if (param !== Element) return undefined;
if (param !== Document) return undefined;

There has been some others but nothing seems to work – any pointers in the right direction would be great. thanks

>Solution :

Use the instanceof operator.

if (param instanceof HTMLElement) {
    return undefined;
}