Tryit Editor v2.9

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<html>
<body>

<p>The toFixed() method rounds a number to a given number of digits.</p>
<p>For working with money, toFixed(2) is perfect.</p>

<p id="demo"></p>

<script>
var x = 9.656;
document.getElementById("demo").innerHTML =
    x.toFixed(0) + "<br>" +
    x.toFixed(2) + "<br>" +
    x.toFixed(4) + "<br>" +
    x.toFixed(6);
</script>

</body>
</html>