Javascript Math Floor Decimal Places

This is a solid answer.

Javascript math floor decimal places.

A number can be rounded off to upto 2 decimal places using two different approaches in javascript. The number tofixed method takes an integer as an input and returns the the given number as a string in which the fraction is padded to the input integers length. Math floor value 100 100 tofixed 2. 2 make number of decimal places dynamic not hard coded to 2.

Rounding numbers with decimal precision requires a little bit of calculation and math round optionally we can use the tofixed method that belongs to the number prototype. 1 that should solve the rounding issue. A number representing the largest integer less than or equal to the specified number. The output type of tofixed is a string which needs to be passed to a top level function called parsefloat to return a number unfortunately this seems to be really slow.

The floor method rounds a number downwards to the nearest integer and returns the result. The string 9 01345 was rounded to 9 01. This rounded the number to 4 decimal places resulting in 383 4891. For 383 48910093 we changed the second parameter to 4.

We were able to round the float 2 333 to 2 decimal places. If the passed argument is an integer the value will not be rounded. It truncates cuts off the dot and the digits to the right of it no matter whether the argument is a positive or negative number. Math floor x parameters x a number.

A couple of improvements i can think of. Unlike the other three math methods. 3 tofixed seems unnecessary. I d still output the result of the above using tofixed though so.

If the desired number of decimals are higher than the actual number zeros are added to create the desired decimal length. The tofixed method converts a number into a string rounding to a specified number of decimals. 1 vs code typescript file doesn t like math round passing in a string. Because floor is a static method of math you always use it as math floor rather than as a method of a math object you created math is not a constructor.