You can use the Boolean() function to find out if an expression (or a variable) is true: Or even easier: The chapter JS Comparisons gives a full overview of comparison operators. The chapter JS If Else gives a full overview of conditional statements. Here are some examples:

Mar 6, 2025 · Boolean values can be one of two values: true or false, representing the truth value of a logical proposition. Boolean values are typically produced by relational operators, equality operators, and logical NOT (!). They can also be produced by functions that represent conditions, such as Array.isArray().

Comparison and Logical operators are used to test for true or false. Comparison operators are used in logical statements to determine equality or difference between variables or values. Given that x = 5, the table below explains the comparison operators:

Apr 3, 2025 · This chapter describes JavaScript's expressions and operators, including assignment, comparison, arithmetic, bitwise, logical, string, ternary and more. At a high level, an expression is a valid unit of code that resolves to a value.

Dec 13, 2024 · In JavaScript, the && operator doesn’t return true or false unless explicitly working with boolean values. Instead, it returns the actual value of the last operand evaluated: If the first operand (x) is falsy (like 0, null, undefined, false), it stops and returns that value.

Javascript operators are used to perform different types of mathematical and logical computations. The Assignment Operator = assigns values. The Addition Operator + adds values. The Multiplication Operator * multiplies values. The Comparison Operator > compares values. The Assignment Operator (=) assigns a value to a variable:

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 called “logical”, they can be applied to values of any type, not only boolean. Their result can also be of any type. Let’s see the details. || (OR)

Mar 28, 2023 · There are three operators: AND, OR and NOT. They may be used either in a database or in coding and come very hand to developers when building components of a complex logic or flow. How to Implement Boolean Operators in JavaScript? Let’s understand a bit more about each of these implemented in Javascript with more details. 1.

Mar 17, 2025 · Boolean operators in JavaScript are used to perform logical operations on boolean values. The three main boolean operators are: AND Operator (&&): The AND operator returns true if both operands are true, otherwise it returns false. OR Operator (||): The OR operator returns true if at least one of the operands is true, otherwise it returns false.

Feb 1, 2020 · Boolean Booleans are a primitive datatype commonly used in computer programming languages. By definition, a boolean has two possible values: true or false. In JavaScript, there is often implicit type coercion to boolean.