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Learn JavaScript Part 6: Typeof Operator

Typeof operator is used to get type of JavaScript variable
  1. <!DOCTYPE html>  
  2. <html xmlns="http://www.w3.org/1999/xhtml">  
  3. <head>  
  4.     <title></title>  
  5. </head>  
  6. <body>  
  7.     <script id="javascript">  
  8.     var age = 30;  
  9.   
  10.     alert(typeof age);  
  11.   
  12.     var fname = "Akshay";  
  13.   
  14.     alert(typeof fname);  
  15.     </script>  
  16. </body>  
  17. </html> 
 Output

number

string