Check if Object is empty in Javascript

To check if an object is empty in JQuery we use jQuery.isEmptyObject( object ) with will return true on success , false on failure.

Ex :

jQuery.isEmptyObject({}); // true
jQuery.isEmptyObject({ foo: "bar" }); // false

1 2	jQuery.isEmptyObject({}); // true jQuery.isEmptyObject({ foo: "bar" }); // false

To check if an object is empty or not using Javascript we use Object.getOwnPropertyNames() .The Object.getOwnPropertyNames() method returns an array of all properties (enumerable or not) found directly upon a given object.

var obj = {};
Object.getOwnPropertyNames(obj).length === 0; //true
 
obj = {foo : 'bar'};
Object.getOwnPropertyNames(obj).length === 0; //false

var obj = {};

Object.getOwnPropertyNames(obj).length === 0; //true

obj = {foo : 'bar'};

Object.getOwnPropertyNames(obj).length === 0; //false

As a function :

function isEmptyObject(obj){
  return (Object.getOwnPropertyNames(obj).length === 0);
}

function isEmptyObject(obj){

return (Object.getOwnPropertyNames(obj).length === 0);

}

How to use :
isEmptyObject({}); // flase

That’s it.

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Arjun

I am Arjun from Hyderabad (India). I have been working as a software engineer from last 7+ years, and its my passion to learn new things and implement them as a practice. Aside from work, I likes gardening and spending time with pets.