Problem Statement
given an array of numbers, write a JavaScript program to check if all the numbers in the given array are even numbers
Solution
to check if all the numbers in the given array are even, call every() method on this array, and pass a function that returns true for an even number, or false otherwise
Program
numbers
is the given array of numbers. isEven
is the function that checks if a given number is even or not. every()
method checks if every element in the numbers
array is even
function isEven(num) {
if (num % 2 == 0) {
return true;
} else {
return false;
}
}
let numbers = [4, 10, 8, 18];
let output = numbers.every(isEven);
console.log('Are all numbers even? : ' + output);
you may take some odd numbers in the numbers
array and check the result