# How to Always Return a Negative Number in JavaScript?

To make sure that you always return a negative number in JavaScript, you can do either of the following:

## Using Unary Negation Operator

You can convert the number to its absolute form, and then negate it using the unary negation operator (`-`):

```-Math.abs(n)
```

This would convert a positive number to negative and ensure that an already negative number remains unchanged. For example, you can use this in the following way:

```// ES6+
const neg = (num) => -Math.abs(num);

console.log(neg(1234)); // -1234
console.log(neg(-1234)); // -1234
```

You can rewrite the "`neg`" function as a function declaration/statement (instead of using arrow function), to support versions of ES prior to version 6.

## Using Arithmetic Operators

You can convert the number to its absolute form, and then negate it either by:

• Multiplying or dividing the number by `-1`, or;
• Subtracting the number from `0`.
```Math.abs(n) * -1
```
```Math.abs(n) / -1
```
```0 - Math.abs(n)
```

This would convert a positive number to negative and ensure that an already negative number remains unchanged. For example, you can use these in the following way:

```// ES6+
const neg = (num) => Math.abs(num) * -1;

console.log(neg(1234)); // -1234
console.log(neg(-1234)); // -1234
```
```// ES6+
const neg = (num) => Math.abs(num) / -1;

console.log(neg(1234)); // -1234
console.log(neg(-1234)); // -1234
```
```// ES6+
const neg = (num) => 0 - Math.abs(num);

console.log(neg(1234)); // -1234
console.log(neg(-1234)); // -1234
```

You can rewrite the "`neg`" function as a function declaration/statement (instead of using arrow function), to support versions of ES prior to version 6.

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