Solution using JavaScript:

function breakingRecords(scores) { let maxCount = 0; let minCount = 0; let highScore = scores[0]; let lowScore = scores[0];

for(let i = 1; i < scores.length; i++) {
    if(scores[i] > highScore) {
        maxCount = maxCount + 1;
        highScore = scores[i];
    } 
    if(scores[i] < lowScore) {
        minCount = minCount + 1;
        lowScore = scores[i];
    }
}
return [maxCount, minCount];

}

let scores1 = [3, 4, 21, 36, 10, 28, 35, 5, 24, 42]; console.log(breakingRecords(scores1));