Null in js code example

Example 1: 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 2: javascript check for null variables

var myVar=null;

if(myVar === null){
    //I am null;
}

if (typeof myVar === 'undefined'){
    //myVar is undefined
}