What are the logical operators in js

JavaScript's logical operators are used for Boolean operations, including: AND operator (&&): compares whether both conditions are true. Or operator (||): Compares two conditions to see if at least one of them is true. Not operator (!): Negates a Boolean value. Zero condition operator (??): Returns the first condition if the first condition is true, otherwise returns the second condition.

Logical Operators in JavaScript

Logical operators in JavaScript are used to perform Boolean operations, they allow Developers compare and combine Boolean values. The following are the most common logical operators:

1. AND operator (&&):

• If two operands If both are true, then true is returned, otherwise false is returned.
• Used to test whether multiple conditions are true.

For example:

<code class="js">const isEligible = (age >= 18) && (hasDriversLicense);</code>

2. Or operator (||):

• if If any operand is true, then true is returned, otherwise false is returned.
• Used to test whether at least one of multiple conditions is true.

For example:

<code class="js">const isStudent = (hasStudentCard) || (isUnder18);</code>

3. Not operator (!):

• will Negate the Boolean value. If the operand is true, then false is returned, and vice versa.
• Used to invert a condition or convert an expression to a Boolean value.

For example:

<code class="js">const isNotEligible = !(isEligible);</code>

4. Zero conditional operator (??):

• If the first operand is true, then the first operand is returned, otherwise the second operand is returned.
• is used to provide a default value, used when the first expression is false.

For example:

<code class="js">const firstName = user.firstName ?? "Guest";</code>

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