FastFoodCoding

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Demo

Code

<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("#btn").click(function(){
        var number = $("#num").val();
        var output = 1;

        if(number <= 0){
             output = 1;
        }else{
            for(i=1; i<=number; i++){
                output = output*i;
            }
        }
        $("#result").html(output);
});
});
</script>
</head>
<body>
Enter a number:
<input type = "text" name = "value" id = "num"></input>
<button id= "btn"> Submit </button>
<p id = "result"> </p>
</body>
</html>



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