check typeof object javascript code example

Example 1: javascript typeof shows object

What value it has 	 			What the 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 find type of variable

> typeof "foo"
"string"
> typeof true
"boolean"
> typeof 42
"number"

if(typeof bar === 'number') {
   //whatever
}

Example 3: javascript get type of var

typeof operando