Let’s take a function that returns the absolute value of a given number:

const abs = (number) => {
    if (number >= 0) {
        return number;
    }
    return -number;
};
abs(10); // 10
abs(-10); // 10

Can we write this more concisely? Using return "value depending on condition"?

To do this, we need an expression next to return, but if is a statement.
JavaScript has an expression similar to if-else, which is the ternary operator.

The ternary operator always takes three operands:

const abs = (number) => {
    return number >= 0 ? number : -number;
};

A shorter version of the abs function using the ternary operator looks like this:

const abs = (number) => (number >= 0 ? number : -number);

Pay attention to parentheses when writing code with the ternary operator. They’re not required but recommended to avoid mistakes.