What is the reason for the behavior below? Why not 3.3?
I am running the JavaScript console and are returning this result.
Number(1.1)
1.1
Number(1.1) + Number(1.1)
2.2
Number(1.1) + Number(1.1) + Number(1.1)
3.3000000000000003
Number(1.1) + Number(1.1) + Number(1.1) + Number(1.1)
4.4
Number(1.1) + Number(1.1) + Number(1.1) + Number(1.1) + Number(1.1)
5.5
This happens because of floating-point precision errors, since it is not possible to map 1.1 to a finite binary value. A similar issue can be seen here . Home
This behavior can be changed through the toFixed () function.
Example:
(1.1 + 1.1 + 1.1).toFixed(2)
2 being the number of decimal places.
Number is a javascript function that converts the string to a floating-point value See that inside the parenthesis has (dot), then the string inside the parentheses is converted to floating point.