06. Chess Board Data Types and Variables - More Exercise

function chessBoard(num) {
    if (num > 0) {
        console.log('<div class="chessboard">');
    }
    for (let i = 1; i <= num; i++) {
        console.log('  <div>');
        for (let y = 1; y <= num; y++) {
            if (i % 2 != 0) {
                if (y % 2 != 0) {
                    console.log('    <span class="black"></span>');
                } else {
                    console.log('    <span class="white"></span>');
                }
            } else {
                if (y % 2 != 0) {
                    console.log('    <span class="white"></span>');
                } else {
                    console.log('    <span class="black"></span>');
                }
            }
        }
        console.log('  </div>');
    }
    if (num > 0) {
        console.log('</div>');
    }
}