Mastering Even & Odd Number Logic in JavaScript

Even & Odd Number Logic in JavaScript

Here are some examples to demonstrate solving “Even-Odd” problems in JavaScript Using the filter() method and forEach() Method:

Problem 1: Check whether a number is even or odd

function checkEvenOdd(num){
  if (num % 2 === 0) {
    console.log(num + " This is even");
  }else{
    console.log(num + " this is odd");
  }
}
checkEvenOdd(7); //output : 7 is odd;

Problem 2: Print all even numbers from an array

let Num = [1, 2, 3, 4, 5, 6, 7]
function printEvenNum(array) {
  array.forEach(num =>{
    if(num % 2 === 0){
      console.log(num + " " + "even Numbers");
    }
  })
}
printEvenNum(Num); 
//Output:
//2 Even Numbers
//4 Even Numbers
//6 Even Numbers

Problem 3: Print all odd numbers from an array

let Num = [1, 2, 3, 4, 5, 6, 7]
function printOddNum(array) {
  array.forEach(num =>{
    if(num % 2 !== 0){
      console.log(num + " " + "odd Number")
    }
  });
}
printOddNum(Num);
//Output :
//1 odd Number
//3 odd Number
//5 odd Number
//7 odd Number

Problem 4: Count the even and odd numbers from an array

let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];

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