Summary  
This chapter covers the AND (`&&`) logical operator, showing how to join multiple Boolean expressions into a single compound condition that evaluates to true only if all subconditions are true.

General domain of usage  
Validating numeric ranges via conditional branching.

**Logical operators** allow us to combine multiple **boolean expressions** into a single, more complex condition.

Definition

The **AND operator** (`&&`) is a **logical operator**, which joins two or more expressions and returns `true` only if all the expressions evaluate to `true`.

For example, we can combine the conditions `a >= 10` and `a <= 20` using the `&&` operator:

```js
a >= 10 && a <= 20
```

This expression means: **"`a` is greater than or equal to 10 AND `a` is less than or equal to 20."**




What does the `&&` (AND) operator do in JavaScript?

Which of the following conditions will evaluate to false if `x = 8`?

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` AND` Logical Operator

1. What does the `&&` (AND) operator do in JavaScript?

2. Which of the following conditions will evaluate to false if `x = 8`?

` AND` Logical Operator

1. What does the && (AND) operator do in JavaScript?

2. Which of the following conditions will evaluate to false if x = 8?

1. What does the `&&` (AND) operator do in JavaScript?

2. Which of the following conditions will evaluate to false if `x = 8`?