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JavaScript: Check whether a given positive number is a multiple of 3 or a multiple of 7

JavaScript Basic: Exercise-25 with Solution

Write a JavaScript program to check whether a given positive number is a multiple of 3 or a multiple of 7.

Pictorial Presentation:

JavaScript: Check if a given positive number is a multiple of 3 or a multiple of 7

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to check whether a given positive number is a multiple of 3 or a multiple of 7. </title>
</head>
<body>

</body>
</html>

JavaScript Code:

function test37(x) 
{
  if (x % 3 == 0 || x % 7 == 0) 
  {
    return true;
  } 
  else {
    return false;
  }
}

console.log(test37(12));
console.log(test37(14));
console.log(test37(10));
console.log(test37(11));

Sample Output:

true
true
false
false

Flowchart:

Flowchart: JavaScript - Check whether a given positive number is a multiple of 3 or a multiple of 7

ES6 Version:

function test37(x) 
{
  if (x % 3 == 0 || x % 7 == 0) 
  {
    return true;
  } 
  else {
    return false;
  }
}

console.log(test37(12));
console.log(test37(14));
console.log(test37(10));
console.log(test37(11));

Live Demo:

See the Pen JavaScript: check if a given positive number is a multiple of 3 or 7.-basic-ex-25 by w3resource (@w3resource) on CodePen.


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JavaScript: Tips of the Day

Returns the sum of the powers of all the numbers from start to end (both inclusive)

Example:

const sumPower = (end, power = 2, start = 1) =>
  Array(end + 1 - start)
    .fill(0)
    .map((x, i) => (i + start) ** power)
    .reduce((a, b) => a + b, 0);
console.log(sumPower(10)); // 385
console.log(sumPower(10, 3)); // 3025
console.log(sumPower(10, 3, 5)); // 2925 

Output:

385
3025
2925