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JavaScript Practice Questions And Answer

Problem: Write a program to calculate factorial of a given number.
Solution:

<html>
 <head>
  <script>
   function demo1()
  {
    var N = 5
    //fact = 5*4*3*2*1
    var f = 1
    for(var i=N; i>=1; i = i-1)
      { 
        f=f*i 
        document.write(i +"-" + f + "</br>")
      }
       document.write("Thanks")
    }
    </script>
   </head>
      <body>
        <input type="button" value="Go" onclick="demo1()" />
      </body>
</html>

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