It does not work quite correctly, why does it sort through all the numbers?

Question

JavaScript

Given an array of numbers. Check that this array contains the number 5. If there is, print 'yes', and if not, print 'no'.

Here is my code:
============================================= ================================================= ===========
let arr = [2, 55, 6, 65, 65, 65, 65, 65, 6, 4, 84, 5];
for(let i = 0; i < arr.length; i++){
if (arr[i] == 5)
document.write('Yes');

else
document.write('No');

}
The problem is that the browser displays the following response: NoNoNoNoNoNoNoNoNoNoNoNoYes Is
it necessary or yes or no

Answer 1

Well, you put the output into the loop at each iteration. Take it out for a cycle.

let arr = [2, 55, 6, 65, 65, 65, 65, 65, 6, 4, 84, 5];
let result = 'Нет';
for(let i = 0; i < arr.length; i++){
  if (arr[i] == 5) result = 'Есть';
}
document.write(result);

A shorter example

let arr = [2, 55, 6, 65, 65, 65, 65, 65, 6, 4, 84, 5];
const result = arr.some(n => n === 5);
document.body.textContent = result ? 'Есть' : 'Нет';

Answer 2

Because you are calling document.write on every iteration of the loop