$.ajax({
url: 'url',
type: 'POST',
dataType: 'json',
cache: false,
data: obj,
})
.success(function(data) {
// var dataDecode = JSON.parse(data);
console.log("Полученные данные\n", data.doctors[0].day.length, data.doctors[0].day);
var dataObj = data.doctors[0].day;
let arrayLength = dataObj.length;
let getWeek = dataObj.length / 7;
let getweekNum = Math.floor(getWeek);
console.log(data.doctors[0]);