NN 2, IE 3

Use the `Math.round(
)` method on the value:

var roundedVal = Math.round(floatingPointValue);

The operation does not disturb the original value. Capture the rounded result in a variable.

The algorithm that the `Math.round( )` method uses
is that any floating-point value that is greater than or equal to
*x*`.5` is rounded up to
*x*`+1`; otherwise, the
returned value is *x*.

JavaScript's `Math` object contains
some other useful methods for trimming floating-point numbers of
their fractional parts. `Math.floor(
)` and `Math.ceil(
)` return the next lowest and next highest
integer values, respectively. For example,
`Math.floor(3.25)` returns `3`,
while `Math.ceil(3.25)` returns
`4`. With negative values, the rules still apply,
but the results seem backward at first glance:
`Math.floor(-3.25)` returns the next lowest integer,
`-4`; `Math.ceil(-3.25)` returns
`-3`. For positive values, you can use the
`Math.floor( )` method as a substitute for what some
other languages treat as the integer of a number.

Anytime a floating-point number evaluates to a number equal to an integer value, the decimal and digits to the right of the decimal go away. A variable can hold a floating-point number in one statement and be modified to an integer in the next. This drives some programmers crazy because they were indoctrinated by other languages to treat each type of number as a different data type.