JavaScript ES6 provides three useful logical assignment operators:
1. `&&=`
2. `||=`
3. `??=`

#   
## The &&= operator
The `&&=` is pronounced as "Logical AND assignment operator" and is used in between two values. 

If the first value is truthy, then the second value is assigned. It is evaluated left to right.

## Syntax
```javascript
expression1 &&= expression2
```

## Example:


let expression1 = 0;
let expression2 = 5;
let expression3 = 10;

expression1 &&= expression2;

expression2 &&= expression3;

console.log("Expression 1", expression1);
console.log("Expression 2", expression2);

codemirror

console

## Explanation

In the first evaluation on line 5, `expression1` is falsy. The `expression1` value will not change. 

In the second evaluation on line 7, `expression2` is truthy. The `expression3` value will be assigned to `expression2`.

# The ||= operator
The `||=` is pronounced as 
"Logical OR assignment operator" and is used in between two values. 

If the first value is falsy, then the second value is assigned. It is evaluated left to right.

## Syntax
```
expression ||= expression2
```

## Example:

let expression1 = 0;
let expression2 = 5;
let expression3 = 10;

expression1 ||= expression2;

expression2 ||= expression3;

console.log("Expression 1", expression1);
console.log("Expression 2", expression2);

## Explanation

In the first evaluation on line 5, the `expression1` is falsy. The `expression2` value will be assigned to `expression1`. 

In the second evaluation on line 7, `expression2` is truth. The `expression2` value will not change.

# The ??= operator
The `??=` is pronounced as "Nullish coalescing assignment operator" and is used in between two values. 

If the first value is `undefined` or `null`, then the second value is assigned. It is evaluated left to right.

## Syntax
```
expression ??= expression2
```

## Example:

let expression1 = null;
let expression2 = 5;
let expression3 = 10;

expression1 ??= expression2;

expression2 ??= expression3;

console.log("Expression 1", expression1);
console.log("Expression 2", expression2);

## Explanation
In the first evaluation on line 5, `expression1` is `null`. The `expression2` value will be assigned to `expression1`. 

In the second evaluation on line 7, `expression2` is neither `null` nor `undefined`. The `expression2` value will not change.

What are logical assignment operators in JavaScript?

JavaScript ES6 provides three useful logical assignment operators:  &&= ||= ??=   The &&= operator The &&= is pronounced as “Logical AND assignment operator” and is used in between two values. If the first value is truthy, then the second value is assigned. It is evaluated left to right. Syntax expression1 &&= expression2  Example: 