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JavaScript: Get the largest even number from an array of integers

JavaScript Basic: Exercise-126 with Solution

Write a JavaScript program to get the largest even number from an array of integers.

Pictorial Presentation:

JavaScript: Get the largest even number from an array of integers.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title> Get the largest even number from an array of integers</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function max_even(arra) {

  arra.sort((x, y) => y - x);

  for (var i = 0; i < arra.length; i++) {
    if (arra[i] % 2 == 0)
      return arra[i];
    }
  }

console.log(max_even([20, 40, 200]));
console.log(max_even([20, 40, 200, 301]));

Sample Output:

200
200

Flowchart:

Flowchart: JavaScript - Get the largest even number from an array of integers

ES6 Version:

function max_even(arra) {

  arra.sort((x, y) => y - x);

  for (let i = 0; i < arra.length; i++) {
    if (arra[i] % 2 == 0)
      return arra[i];
    }
  }

console.log(max_even([20, 40, 200]));
console.log(max_even([20, 40, 200, 301]));

Live Demo:

See the Pen javascript-basic-exercise-126 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript program to find the longest string from a given array.
Next: Write a JavaScript program to reverse the order of the bits in a given integer.

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JavaScript: Tips of the Day

Classes/function constructors

class Person {
  constructor() {
    this.name = 'Owen';
  }
}

Person = class AnotherPerson {
  constructor() {
    this.name = 'Eddie';
  }
};

const member = new Person();
console.log(member.name);

We can set classes equal to other classes/function constructors. In this case, we set Person equal to AnotherPerson. The name on this constructor is Eddie, so the name property on the new Person instance member is "Eddie".

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