Comparison operators can be used in conditional statements to compare values and take action depending on the result: You will learn more about the use of conditional statements in the next chapter of this tutorial. Logical operators are used to determine the logic between variables or …

Mar 13, 2025 · The logical NOT (!) (logical complement, negation) operator takes truth to falsity and vice versa. It is typically used with boolean (logical) values. When used with non-Boolean values, it returns false if its single operand can be converted to true; otherwise, returns true.

May 17, 2017 · Condition 1 and 3 are captured by the else statement and both return true (which is not what you want, you want condition 3 to return false). When providing the numbers 7 and 4 , this corresponds to condition 3, which illustrates how the function fails.

Mar 14, 2023 · JavaScript NOT Operator can be used to find the flipped value of a boolean. It can be used to convert a true value to a false and vice-versa. This NOT operator can also be used on non-booleans to convert them to the reverse of their actual boolean value.

Nov 21, 2024 · The conditional operator, also referred to as the ternary operator (?:), is a shortcut for expressing conditional statements in JavaScript. JavaScript let age = 21 ; const result = ( age >= 18 ) ?

Jun 7, 2011 · The conditional (ternary) operator is the only JavaScript operator that takes three operands. This operator is frequently used as a shortcut for the if statement. condition ? expr1 : expr2

Nov 17, 2011 · The conditional operator is almost always used for selecting two alternative values, not statements. An if statement is preferred for conditional branching of statements. As to your last question, yes, if you really must, you can abuse the [] construct: (x == y) ? [alert("yo!"), document.write("woot!")] : otherstuff(); But please don't. 8-)

Nov 12, 2022 · To negate code in JavaScript, we can make use of the JavaScript logical NOT or Negate (!) operator, and in this article, we will discuss how to achieve this and write if not code. The NOT (!) operator, when applied on an operand, reverses the Boolean value. For example, it changes true to false, and vice-versa. It is considered a negation.

A logical operator is one or two symbols or a keyword that tells the computer how to combine conditional statements. The result of using a logical operator is a boolean value (true or false). See this page for an overview of other types of operators. The most common logical operators are: && (Logical AND) || (Logical OR)! (Logical NOT)

The logical NOT operator flips the value of a boolean. If the value is true, the NOT operator returns false. If the value is false, the NOT operator returns true. In the example above, the line inside the if statement will not run because !true returns false.