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JavaScript Practice Questions And Answer

Problem:Write a program to calculate factorial using function with argument and with return type.
Solution:

            <html>
             <head>
              <script>
               function factorial(n)
                {
                  if(n==1)
                  {
                    return 1
                  }
                    var f = n * factorial(n-1)
                    return f
                }
                  function demo1()
                {
                  var fact = factorial(7)
                  document.write(fact+"<br>")
              }
               </script>
            </head>
            <body>
                <input type="button" value="Go" onclick="demo1()"/><br>
            </body>
        </html>

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