How to check if object has any properties in JavaScript

In this article, you will learn how to check if an object has any properties in JavaScript.

To check if an object has a property or is empty, you can use the Object.keys() method which returns an array with all the properties of your object.

let obj = {
  name:"John",
  age:40
 };
console.log(Object.keys(obj))

/* output 
 ▶️Array
   0:name
   1:age
   length:2
*/

So, using its length property, you can check whether the above object contains any property.

<script>
 let obj = {
  name:"John",
  age:40
 };

if(Object.keys(obj).length){
  console.log('Object is not blank!')
 } else{
   console.log('Object is blank!')
 }
 </script>

Try it Yourself »