while (true) {
    let str = rand(1, 10);
    str === 1 ? break : alert(str);
};

function rand(min,max){return Math.floor(Math.random()*(max-min+1))+min;};
[rand(1, 10)].map(function (value, index, mas) {
	mas = [rand(1, 10)];
	if (value != 1) mas = [];
	alert(value);
});