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JavaScript: Check two given integer values and return true if one of the number is 15 or if their sum or difference is 15

JavaScript Basic: Exercise-45 with Solution

Write a JavaScript program to check two given integer values and return true if one of the number is 15 or if their sum or difference is 15.

Pictorial Presentation:

JavaScript: Check two given integer values and return true if one of the number is 15 or if their sum or difference is 15

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to check two given integer values and return true if one of the number is 15 or if their sum or difference is 15.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function test_number(x, y) {
    return (x === 15 || y === 15 || x + y === 15 || Math.abs(x - y) === 15);
}

console.log(test_number(15, 9));
console.log(test_number(25, 15));
console.log(test_number(7, 8));
console.log(test_number(25, 10));
console.log(test_number(5, 9));
console.log(test_number(7, 9));
console.log(test_number(9, 25));

Sample Output:

true
true
true
true
false
false
false

Flowchart:

Flowchart: JavaScript - Check two given integer values and return true if one of the number is 15 or if their sum or difference is 15

ES6 Version:

function test_number(x, y) {
    return (x === 15 || y === 15 || x + y === 15 || Math.abs(x - y) === 15);
}

console.log(test_number(15, 9));
console.log(test_number(25, 15));
console.log(test_number(7, 8));
console.log(test_number(25, 10));
console.log(test_number(5, 9));
console.log(test_number(7, 9));
console.log(test_number(9, 25));

Live Demo:

See the Pen JavaScript: Check two given integer values and return true if one of the number is 15 or if their sum or difference is 15 - basic-ex-45 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript program to check from three given integers that if a number is greater than or equal to 20 and less than one of the others.
Next:Write a JavaScript program to check two given non-negative integers and if one of the number (not both) is multiple of 7 or 11.

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