 # JavaScript: Create the value of NOR of two given booleans

## JavaScript Basic: Exercise-124 with Solution

Write a JavaScript program to create the value of NOR of two given booleans.

Note: In boolean logic, logical nor or joint denial is a truth-functional operator which produces a result that is the negation of logical or. That is, a sentence of the form (p NOR q) is true precisely when neither p nor q is true - i.e. when both of p and q are false

Sample Example:

For x = true and y = false, the output should be logical_Nor(x, y) = false; For x = false and y = false, the output should be logical_Nor(x, y) = true.

Sample Solution:

HTML Code:

``````<!DOCTYPE html>
<html>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title> Create the value of NOR of two given booleans</title>
<body>

</body>
</html>
```
```

JavaScript Code:

``````function test_logical_Nor(a, b) {
return (!a && !b)
}
console.log(test_logical_Nor(true, false));
console.log(test_logical_Nor(false, false));
console.log(test_logical_Nor(true, true));
``````

Sample Output:

```false
true
false
```

Flowchart: ES6 Version:

``````function test_logical_Nor(a, b) {
return (!a && !b)
}
console.log(test_logical_Nor(true, false));
console.log(test_logical_Nor(false, false));
console.log(test_logical_Nor(true, true));
``````

Live Demo:

See the Pen javascript-basic-exercise-124 by w3resource (@w3resource) on CodePen.

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## JavaScript: Tips of the Day

Parameter's value

```function getItems(fruitList, ...args, favoriteFruit) {
return [...fruitList, ...args, favoriteFruit]
}

getItems(["banana", "apple"], "pear", "orange")
```

...args is a rest parameter. The rest parameter's value is an array containing all remaining arguments, and can only be the last parameter! In this example, the rest parameter was the second parameter. This is not possible, and will throw a syntax error.

```function getItems(fruitList, favoriteFruit, ...args) {
return [...fruitList, ...args, favoriteFruit];
}

getItems(['banana', 'apple'], 'pear', 'orange');```
The above example works. This returns the array [ 'banana', 'apple', 'orange', 'pear' ].

Ref: https://bit.ly/3jFRBje