JavaScript: Round to a number of decimal places, but strip extra zeros

javascript math floating-point rounding

>>> parseFloat(0.9999999.toFixed(4));1>>> parseFloat(0.0009999999.toFixed(4));0.001>>> parseFloat(0.0000009999999.toFixed(4));0

javascript math floating-point rounding

Yes, there is a way. Use parseFloat().

parseFloat((1.005).toFixed(15)) //==> 1.005parseFloat((1.000000000).toFixed(15)) //==> 1

javascript math floating-point rounding

As I understand, you want to remove the trailing zeros in the string that you obtained via toFixed(). This is a pure string operation:

var x = 1.1230000;var y = x.toFixed(15).replace(/0+$/, "");  // ==> 1.123

CodeHunter