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? asked in Computers & InternetProgramming & Design · 1 decade ago

How do I control amount of numbers after the decimal point in javascript?

I just started in JS this month (Nov. 2010) and would like to be able to have the ability to show as few or as many places to the right of the decimal point as I want, especially in divsions.

This would be printed to screen using document.write.

If it can print to screen using another command feel free to include it if a beginner can understand it.

Thanks!

2 Answers

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  • Matt D
    Lv 4
    1 decade ago
    Favorite Answer

    use Number.toFixed().

    For example (1.0/3).toFixed(2) should evaluate to "0.33"

  • Katrina Nguyen
    1 decade ago

    You can try this program from

    W3Schools, it's in the back pages of the JS tutor and kinda obscure, so use the link below too!

    <script type="text/javascript">

    var num = new Number(13.3714);

    document.write(num.toFixed()+"<br />");

    document.write(num.toFixed(1)+"<br />");

    document.write(num.toFixed(3)+"<br />");

    document.write(num.toFixed(10));

    </script>

    I hope it works for what you want!

    Kat

    Source(s): http://www.w3schools.com/jsref/jsref_tofixed.asp
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