Learn to make a factorial calculator program using JavaScript and Html.
(2 minutes coding)
1. Open NOTEPAD or NOTEPAD++ in your computer .
2.Copy the code given below .
<!doctype html>
<html>
<head>
<script>
function fac(){
var i, n, fact;
fact=1;
n=parseInt(document.getElementById("num").value);
for(i=1; i<=n; i++)
{
fact= fact*i;
}
document.getElementById("ans").value= fact;
}
</script>
</head>
<body bgcolor= "black" text= "gold" alignment ="center">
<h1>FACTORIAL CALCULATOR</h1><br>
Enter Num: <input id="num" value=0 maxlength=3;>
<br>
                              
<button onclick="fac()">Enter</button>
<br>
      Result=<input id="ans" readonly><br>
</body>
</html>
3. Now paste it in your Notepad file.
4. Now save your file with .html extension.
5. File will appear like this.
(2 minutes coding)
Steps to make your own factorial calculator using JavaScripts and Html.
1. Open NOTEPAD or NOTEPAD++ in your computer .
<!doctype html>
<html>
<head>
<script>
function fac(){
var i, n, fact;
fact=1;
n=parseInt(document.getElementById("num").value);
for(i=1; i<=n; i++)
{
fact= fact*i;
}
document.getElementById("ans").value= fact;
}
</script>
</head>
<body bgcolor= "black" text= "gold" alignment ="center">
<h1>FACTORIAL CALCULATOR</h1><br>
Enter Num: <input id="num" value=0 maxlength=3;>
<br>
                              
<button onclick="fac()">Enter</button>
<br>
      Result=<input id="ans" readonly><br>
</body>
</html>
3. Now paste it in your Notepad file.
5. File will appear like this.
6. Now open the file in any browser except internet explorer.
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