check for null object in javascript code example

Example 1: check if object is empty javascript

const empty = {};
/* -------------------------
  Plain JS for Newer Browser
----------------------------*/
Object.keys(empty).length === 0 && empty.constructor === Object
// true
/* -------------------------
  Lodash for Older Browser
----------------------------*/
_.isEmpty(empty)
// true

Example 2: how to check if object is empty javascript

function isEmptyObject(obj) {
    return !Object.keys(obj).length;
}

Example 3: javascript null or object

What it is  	 		What output shows you 
 				when you write |console.log(typeof(variable);
Undefined:					"undefined"
Null:						"object"
Boolean:					"boolean"
Number:						"number"
String:						"string"
Function object:			"function"
E4X XML object:				"xml"
E4X XMLList object:			"xml"
NodeList					"Nodelist [more data]"
HTMLCollection				"HTMLCollection(1) [more data]"

Example 4: javascript null check

if (Var === null) { 
//code goes here
}