Logical OR (||) - JavaScript | MDN
Jul 8, 2025 · The logical OR (||) (logical disjunction) operator for a set of operands is true if and only if one or more of its operands is true. It is typically used with boolean (logical) values. When it is, it …
When should I use ?? (nullish coalescing) vs || (logical OR)?
The OR operator || uses the right value if left is falsy, while the nullish coalescing operator ?? uses the right value if left is null or undefined. These operators are often used to provide a default value if the …
Nullish coalescing operator - The Modern JavaScript Tutorial
The OR || operator can be used in the same way as ??, as it was described in the previous chapter. For example, in the code above we could replace ?? with || and still get the same result: Historically, the …
JavaScript Logical Operators - W3Schools
Given that x = 6 and y = 3, the table below explains the logical operators: The && operator returns true if both expressions are true, otherwise false: The || operator returns true if one or both expressions are …
Advanced Guide to JavaScript Logical Operators - W3docs
Logical operators are pivotal for controlling the flow and decision-making in JavaScript. This guide is crafted to help beginners understand and effectively use JavaScript's logical operators— &&, ||, !, …
An Introduction to JavaScript Logical Operators By Examples
Summary: in this tutorial, you will learn how to use the JavaScript logical operators including the logical NOT operator ( !), the logical AND operator ( &&) and the logical OR operator ( ||). The logical …
Learn JavaScript Online - Courses for Beginners - javascript.com
JavaScript.com is a resource for the JavaScript community. You will find resources and examples for JavaScript beginners as well as support for JavaScript experts. Learn JavaScript or free with our …
Logical operators - The Modern JavaScript Tutorial
Jun 5, 2022 · There are four logical operators in JavaScript: || (OR), && (AND), ! (NOT), ?? (Nullish Coalescing). Here we cover the first three, the ?? operator is in the next article. Although they are …
JavaScript Tutorial
Welcome to the JavaScriptTutorial.net website! This JavaScript Tutorial helps you learn the JavaScript programming language from scratch quickly and effectively. If you find yourself in any of the following …
Nullish coalescing operator (??) - JavaScript - MDN
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 …