var array2D = [
	[11, 12],
	[42, 2],
	[-4, -120],
	[0, 0, 55],
	[1, 34]
];

function checkArray(array) {
	var resArr = [];

	for (var i = 0; i < array.length; i++) {
		for (var j = 0; j < array[i].length; j++) {
			resArr.push(array[i][j] % 2 === 0);
		}
	}

	return resArr;
}

checkArray(array2D);