Aug 26, 2025 · The nullish coalescing (??) operator is a logical operator that returns its right-hand side operand when its left-hand side operand is null or undefined, and otherwise returns its left-hand side …

JavaScript Logical Operators Logical operators are used to determine the logic between variables or values. Given that x = 6 and y = 3, the table below explains the logical operators:

Because JavaScript has what are called "truthy" and "falsy" values, there are expressions that when evaluated in other expressions will result in a true or false condition, even though the value or …

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Feb 3, 2021 · The conditional or question mark operator, represented by a ?, is one of the most powerful features in JavaScript. The ? operator is used in conditional statements, and when paired with a :, …

Due to safety reasons, JavaScript forbids using ?? together with && and || operators, unless the precedence is explicitly specified with parentheses. The code below triggers a syntax error:

The Nullish Coalescing operator in JavaScript is represented by two question marks (??). It takes two operands and returns the first operand if it is not null or undefined.

Jul 8, 2025 · This chapter documents all the JavaScript language operators, expressions and keywords.

Jul 30, 2025 · JavaScript Chaining Operator (?.) The optional chaining operator allows safe access to deeply nested properties without throwing errors if the property doesn’t exist.

In this tutorial, you will learn how to use JavaScript logical operators including logical NOT (!) AND (&&), and OR (|) operators.