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this code will return true if item does exist in array but it should be true when item was duplicated

const arr = [12, 12, 10, 11];
function repeatedItem(i) {
  if (arr.indexOf(i) !== -1) return true;
  else return false
}
console.log(repeatedItem(10));

this code will return true if item does exist in array but it should be true when item was duplicated

what should do to return true if item was duplicated

7 months ago · Santiago Trujillo

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Answer 1 · 2022-07-06T15:00:58.602Z

const arr = [12, 12, 10, 11];

function repeatedItem(item) {
    let count = 0;

    for(let i=0;i<arr.length;i++){
        if(arr[i] === item){
            count++;
            if(count > 1){
                return true;
            }
        }
    }

    return false;
}
console.log(repeatedItem(10));