w3resource
JavaScript Exercises

JavaScript: Check whether a specified value is a DOM element

JavaScript Object: Exercise-18 with Solution

Write a JavaScript function to check whether a given value is a DOM element.

Sample Solution: -

HTML Code:


<html>
  <head>
  <meta charset="utf-8">
  <title>JavaScript function to check whether a specified value is a DOM element</title>
<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
</head> <body> </body> </html>

JavaScript Code:

function is_dom_element(obj) {
    return !!(obj && obj.nodeType === 1);
  }
console.log(is_dom_element(jQuery('body')[0]));

Sample Output:

true

Flowchart:

Flowchart: JavaScript:- Check whether a specified value is a DOM element

Live Demo:

See the Pen javascript-object-exercise-18 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript function to check if an object contains given property.
Next: JavaScript Validation Exercisess

What is the difficulty level of this exercise?