NN 2, IE 3

You want to display the results of numeric calculations with a fixed number of digits to the right of the decimal.

Two recent additions to the JavaScript language (and ECMA standard)
simplify the display of numbers with a specific number of digits.
These methods are implemented in IE 5.5 or later for Windows and
Netscape 6 or later. To obtain a string containing a number with
digits to the right of the decimal, use the ```
toFixed(
)
```

method, as in the following:

document.myForm.total.value = someNumber.toFixed(2);

The argument to the `toFixed( )`

method is the
number of digits to the right of the decimal. Even if the number is
an integer, the resulting string has a decimal and two zeros to the
right of the decimal.

To obtain a string containing a number with a total fixed number of
digits, use the ```
toPrecision(
)
```

method, as in the following:

document.myForm.rate.value = someNumber.toPrecision(5);

The argument to the `toPrecision( )`

method is the
total number of digits in the returned string value, including digits
to the left and right of the decimal (the decimal is not counted). If
the original value has fewer digits than the method argument calls
for, the result is padded with zeros to the right of the decimal:

var num = 98.6; var preciseNum = num.toPrecision(5); // preciseNum is now 98.600

For older browsers, number
formatting is a more cumbersome process, but one that can be
encapsulated in the ```
formatNumber(
)
```

utility function ...

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