javascript - 将数字转换为精度为 2 的浮点数

Question

I am using Javascript and need to convert a number like 0.009 into a number 0.90.

I am trying to do the below, but it only returns 0.9: parseFloat((testValue * 100).toFixed(2))

For numbers like 0.0055, it is giving me 0.55, but for 0.009/0.008/0.007 etc, it is giving me 0.9/0.8/0.7 or in other words number with a precision of 1 after decimal.

How can I make it return 2 precision after decimal point? For eg, I want the code to return 0.90 for 0.009, 0.80 for 0.008 and so on..

Any help would be greatly appreciated.

Answer 1

Just call toFixed(2) , without calling parseFloat() . parseFloat() is converting the formatted number back into a floating point number, and they don't have different precisions.

 let num =.009; console.log((num * 100).toFixed(2)); console.log(parseFloat((num * 100).toFixed(2)));