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:

The nullish coalescing operator (??) in JavaScript only considers null or undefined as "nullish" values. If the left-hand side is any other value, even falsy values like "" (empty string), 0, or false, it will not use …

Jul 8, 2025 · Equality comparisons and sameness JavaScript provides three different value-comparison operations: === — strict equality (triple equals) == — loose equality (double equals) Object.is() …

Mar 31, 2024 · All values in JavaScript are implicitly true or false, and can be coerced to the corresponding boolean value—for example, by using the "loosely equal" comparator.

Nov 12, 2025 · In this article we’ll learn more about different types of comparisons, how JavaScript makes them, including important peculiarities. At the end you’ll find a good recipe to avoid …

2 days ago · Master JavaScript == vs === operators and avoid common bugs. Learn all 8 comparison operators with real examples in 20 minutes.

Dec 11, 2008 · I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing …

When comparing a string with a number, JavaScript will convert the string to a number when doing the comparison. An empty string converts to 0. A non-numeric string converts to NaN which is always …

Jul 8, 2025 · This chapter describes JavaScript's expressions and operators, including assignment, comparison, arithmetic, bitwise, logical, string, ternary and more.

1 day ago · Modern JavaScript Tutorial: simple, but detailed explanations with examples and tasks, including: closures, document and events, object oriented programming and more.