Calculate Factorial using While loop in JavaScript.
AIM: Source Code: <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <input type="button" onclick="multi_3n5()" value="click here"> <script> function multi_3n5() { var n = parseInt(prompt("Number : ")); var i=1,f=1; while(i<=n){ f=f*i; i++; } document.write("factorial of the number = "+f);} </script> </body> </html>