fnumber.toFixed(2) does not always truncate the value to two decimal points

Question

What can be done to prevent numbers like this appearing in my output?

Here is my javascript code.

$("#TaskListing table tr td#Begin input").each(function (index, element) {           

  var theRow = $(element).parent().parent();

  var thePercent = $(theRow).children("tr td#Percent:first");

  currentvalue = $(theRow).data("millisecs");

  fnumber = currentvalue / totalTimeMs;

  thePercent.text( 100 * fnumber.toFixed(2));

});

I thought that using fnumber.toFixed(2) would prevent values like this (28.0000000000004 ) from appearing but yet they appear from time to time.

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Answer 1

Change your code to use toFixed like this.

thePercent.text( (100 * fnumber).toFixed(2) );

You want to perform the calculation first then send it to the toFixed() method

fnumber.toFixed(2) does not always truncate the value to two decimal points

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