Javascript Math Floor Decimal Places

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.

Javascript math floor decimal places. I d still output the result of the above using tofixed though so. This is a solid answer. As you probably know weird precision things can happen with floating point values and on the other side of the spectrum if the number happens to be 15 sounds like the op wants 15 00. A number can be rounded off to upto 2 decimal places using two different approaches in javascript.

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. 2 make number of decimal places dynamic not hard coded to 2. An integer such as 5 will become 5 00 with two zeros being appended behind the decimal place. A couple of improvements i can think of.

The string 9 01345 was rounded to 9 01. We were able to round the float 2 333 to 2 decimal places. Math floor math ceil and math round the way math trunc works is very simple. Math floor x parameters x a number.

3 tofixed seems unnecessary. 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. The floor method rounds a number downwards to the nearest integer and returns the result. 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.

1 that should solve the rounding issue. If the desired number of decimals are higher than the actual number zeros are added to create the desired decimal length. Math floor value 100 100 tofixed 2. This rounded the number to 4 decimal places resulting in 383 4891.

1 vs code typescript file doesn t like math round passing in a string. The tofixed method converts a number into a string rounding to a specified number of decimals. A number representing the largest integer less than or equal to the specified number. If the passed argument is an integer the value will not be rounded.