I have this JS code:
var propertyYield = annualRent / propertyValue * 100.0;
In specific scenario the result is 4.999.
So when I do this
propertyYield.toFixed(2)
I'm getting propertyYield of 5.00.
What I want to achieve is to actually get 4.99 instead of 5.00 as rounding to two decimals.
How can I achieve that?
I have this JS code:
var propertyYield = annualRent / propertyValue * 100.0;
In specific scenario the result is 4.999.
So when I do this
propertyYield.toFixed(2)
I'm getting propertyYield of 5.00.
What I want to achieve is to actually get 4.99 instead of 5.00 as rounding to two decimals.
How can I achieve that?
Share Improve this question edited Aug 25, 2019 at 17:31 Brian Tompsett - 汤莱恩 5,89372 gold badges61 silver badges133 bronze badges asked Jul 25, 2016 at 7:22 LazialeLaziale 8,22548 gold badges155 silver badges271 bronze badges 2- Check this thread which have similar problem statement stackoverflow./a/4912870/4948688 – Ritesh Kashyap Commented Jul 25, 2016 at 7:26
- Please check the article already discussed. Click here – Lovepreet Singh Commented Jul 25, 2016 at 7:34
2 Answers
Reset to default 5You could use Math.floor and some additional arithmetics:
Math.floor(15.7784514000 * 100) / 100
Or convert the number into a string, match the number up to the second decimal place and turn it back into a number:
Number(15.7784514000.toString().match(/^\d+(?:\.\d{0,2})?/))
Then you can still call toFixed to get a string with a fixed number of decimal places.
var num1 = Math.floor(15.7784514000 * 100) / 100;
console.log(num1);
var num2 = Number(15.7784514000.toString().match(/^\d+(?:\.\d{0,2})?/));
console.log(num2)
console.log(num2.toFixed(2))Update: As noted by @kuka this does not work for certain decimal numbers due to floating point error math. Don't use this solution - However I'm leaving it here for documentation sake.
Not sure if I know a library method off hand to do that but quick simple old school solution would be this:
Math.floor(4.999 * 100) / 100.0