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Asked: 2020-10-11 12:51:54 +0800 CST 2020-10-11 12:51:54 +0800 CST

Keep the decimals

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I want to keep the decimals, I have a long number 120.29998999867869and I want to cut it with 5 decimal places, the desired result is 120.299998, I try the following code but I get120.30000

let num = 120.29999999867869;
console.log(num.toFixed(5));

javascript

1 Answers

  1. Best Answer

    In the example that you are giving, the rounding is done towards .30000since it is not the same number that you raise in the question.

    If you want the decimals to be seen without rounding, you can do the following:

    let num = 120.29999999867869;
num.toString().split('.')[0] + '.' + num.toString().split('.')[1].substring(0,5);

    However, it is a not so attractive solution .

    I include examples:

    // Número usado en la pregunta
let num1 = 120.29998999867869
console.log('Numero usado en la pregunta: ' + num1.toFixed(5));

// Número usado en el ejemplo
let num2 = 120.29999999867869;
console.log('Numero usado en el ejemplo: ' + num2.toFixed(5));
console.log('Numero usado en el ejemplo (con split y substring): ' + num2.toString().split('.')[0] + '.' + num2.toString().split('.')[1].substring(0,5));

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