What is the difference between the && and || operators in JavaScript?

In JavaScript, `&&` (logical AND) and `||` (logical OR) are two logical operators used to perform logical operations on boolean values or expressions. Here's a brief explanation of each:

1. Logical AND (`&&`):

   - The `&&` operator returns `true` if both of its operands (values or expressions) are `true`. Otherwise, it returns `false`.

   - It short-circuits, meaning that if the left operand is `false`, the right operand is not evaluated because the overall result will be `false` regardless of the right operand.

   - Example:

   

     let x = true;

     let y = false;

     console.log(x && y);  // Outputs: false

     

2. Logical OR (`||`):

   - The `||` operator returns `true` if at least one of its operands is `true`. If both operands are `false`, it returns `false`.

   - Like `&&`, `||` also short-circuits. If the left operand is `true`, the right operand is not evaluated because the overall result will be `true` regardless of the right operand.

   - Example:

   

     let a = true;

     let b = false;

     console.log(a || b);  // Outputs: true

 

These operators are commonly used in conditional statements and expressions to control the flow of code based on boolean conditions. For example:

let age = 25;

let hasLicense = true;

if (age >= 18 && hasLicense) {

    console.log("You are eligible to drive.");

} else {

    console.log("You are not eligible to drive.");

}

In this example, the `&&` operator is used to check if the age is 18 or older (`age >= 18`) and if the person has a valid license (`hasLicense`). If both conditions are true, the person is considered eligible to drive.