将python中的嵌套排序循环转换为javascript

data = [[4, 2], [1, 3], [5, 1], [3, 4]]
sorted_data = sorted(data, key=lambda x: (x[0], x[1]))

for item in sorted_data:
    print(item)

[1, 3]
[3, 4]
[4, 2]
[5, 1]

var data = [[4, 2], [1, 3], [5, 1], [3, 4]];
data.sort(function(a, b) {
    if (a[0] === b[0]) {
        return a[1] - b[1];
    } else {
        return a[0] - b[0];
    }
});

for (var i = 0; i < data.length; i++) {
    console.log(data[i]);
}

[1, 3]
[3, 4]
[4, 2]
[5, 1]