HasOddNumber

Odd numbers are whole numbers that cannot be divided exactly into pairs. Odd numbers, when divided by 2, leave a remainder of 1. 1, 3, 5, 7, 9, 11, 13, 15 … are sequential odd numbers. Odd numbers have the digits 1, 3, 5, 7 or 9 in their ones place.

Example:
console.log(hasOddNumber([1,2,4,5])); true
console.log(hasOddNumber([2,4,6])); false

function hasOddNumber(arr){
  return arr.some(function(val){
    return val % 2 !== 0;
  })
}

let arr= [1,2,3,4,5,6,7,8,9,10];
console.log(hasOddNumber(arr)); true

We create a function called hasOddNumber with parameter called arr

We return the arr.some some is build in JavaScript method that only one needs to be true from the array;

We return arr.some(function(val){
return val % 2 !== 0})
This means that we take the arr argument use the some method and iterate and check if val % (remainder operator) 2 is different than 0;