Empty Javascript Object check

To check a javascript object is empty or not

To check a javascript object is empty, then you can use below code.

In Newer browser empty checking:
================================
const empty = {};
Object.keys(empty).length === 0 && empty.constructor === Object;

First method: 
function badEmptyCheck(value) {
  return Object.keys(value).length === 0;
}
This method will return true when object is empty.

Second method: 
function goodEmptyCheck(value) {
  Object.keys(value).length === 0
    && value.constructor === Object; // 👈 constructor check
}

This will return false for empty object but it will trigger an type error for Null and undefined object.

The best attempt for checking an object is empty is given below.

function isEmptyObject(value) {
  return Object.keys(value).length === 0 && value.constructor === Object;
}

In older browser, you can use below method to check empty object:
=================================================================
function isObjectEmpty(value){
	return Object.prototype.toString.call(value) === "[object Object]" && JSON.stringify(value) === "{}";
}

Checking an object is empty by using the Jquery:
================================================
jQuery.isEmptyObject({});
// true