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JavaScript: Check from two given integers whether one of them is 8 or their sum or difference is 8

JavaScript Basic: Exercise-40 with Solution

Write a JavaScript program to check from two given integers whether one of them is 8 or their sum or difference is 8.

Pictorial Presentation:

JavaScript: Check from two given integers whether one of them is 8 or their sum or difference is 8

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Write a JavaScript program to check from two given integers whether one of them is 8 or their sum or difference is 8.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function check8(x, y) {
  if (x == 8 || y == 8) {
    return true;
  }

  if (x + y == 8 || Math.abs(x - y) == 8)
  {
    return true;
  }

  return false;
}

console.log(check8(7, 8));
console.log(check8(16, 8));
console.log(check8(24, 32));
console.log(check8(17, 18));

Sample Output:

true
true
true
false

Flowchart:

Flowchart: JavaScript - Check from two given integers whether one of them is 8 or their sum or difference is 8

ES6 Version:

function check8(x, y) {
  if (x == 8 || y == 8) {
    return true;
  }

  if (x + y == 8 || Math.abs(x - y) == 8)
  {
    return true;
  }

  return false;
}

console.log(check8(7, 8));
console.log(check8(16, 8));
console.log(check8(24, 32));
console.log(check8(17, 18));

Live Demo:

See the Pen JavaScript: Check from two given integers - basic-ex-40 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript program to compute the sum of the two given integers, If the sum is in the range 50..80 return 65 other wise return 80.
Next: Write a JavaScript program to check three given numbers, if the three numbers are same return 30 otherwise return 20 and if two numbers are same return 40.

What is the difficulty level of this exercise?



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