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JavaScript: Number.toFixed - specfiy decimal places for a number

The toFixed(n) method, applied on a Number returns a String with n decimal places after the comma.

toFixed(n) truncates the number - it doesn't round it.

<!DOCTYPE html>
<html>
<head>
  <meta content="text/html;charset=utf-8" http-equiv="Content-Type">
  <title>Number.toFixed()</title>

  <script type="text/javascript">

    var out;

    function tf(n) {

      out.innerHTML += n.toFixed(3) + '<br>';
      
    }
    
    function main() {

      out = document.getElementById('out');
      out.style.fontFamily = 'monospace';
      
      tf(4     ); //   4.000
      tf(4.2   ); //   4.200
      tf(4.1004); //   4.100
      tf(4.1009); //   4.100


    }

  </script>

</head>
<body onload='main()';>
  <div id='out'></div>
</body>
</html>

Github repository about-javascript, path: /objects/Number/toFixed.html

JavaScript: Number.toFixed - specfiy decimal places for a number

See also