How Does JavaScript's Ternary Operator (?:) Work?

Understanding the Conditional Operator in JavaScript: ? and :

In JavaScript, the characters '?' and ':' play a crucial role in ternary conditional operators. These operators offer a concise alternative to conventional if-else statements.

Consider the following code snippet:

hsb.s = max != 0 ? 255 * delta / max : 0;

This code demonstrates the use of the ternary conditional operator. It determines whether max is not equal to 0. If this condition is met (max != 0), it evaluates and assigns the expression 255 * delta / max to the hsb.s property. Conversely, if max is equal to 0, hsb.s is assigned the value 0.

To understand this operator, it's helpful to translate the code into an equivalent if-else statement:

if (max != 0) {
  hsb.s = 255 * delta / max;
} else {
  hsb.s = 0;
}

The ternary conditional operator serves as a shorthand notation for situations where concise and readable code is desired.

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