Javascript toFixed No Trailing Zeros

The toFixed() method is a built-in method in JavaScript that returns a string representation of a number with a specified number of digits after the decimal point. However, it adds trailing zeros if necessary to fulfill the provided decimal places.

For example:

let num = 3.14;
num.toFixed(5); // Returns "3.14000"

Sometimes, we may not want the trailing zeros in the result. We can achieve this by converting the string representation of the number to a number again.

Here's an example:

let num = 3.14;
let numWithZeros = num.toFixed(5); // Returns "3.14000"
let numWithoutZeros = +numWithZeros; // Returns 3.14

In the above example, we first use the toFixed() method to get a string representation of the number with 5 decimal places. Then we convert this string back to a number using the unary plus operator (+), which removes the trailing zeros.

Alternatively, we can also use the parseFloat() method instead of the unary plus operator as follows:

let num = 3.14;
let numWithZeros = num.toFixed(5); // Returns "3.14000"
let numWithoutZeros = parseFloat(numWithZeros); // Returns 3.14

In both cases, we get a number without any trailing zeros.

In summary, to get a number without trailing zeros using the toFixed() method in JavaScript, we can:

• Use the unary plus operator to convert the string representation back to a number.
• Use the parseFloat() method to convert the string representation back to a number.

We should keep in mind that these methods may result in floating-point precision issues, especially when dealing with large or complex calculations. Therefore, it's always a good practice to double-check the results and perform any necessary rounding or correction.