shmatuan

let pasteClickClientPhone = true;

$('.client-phone').click(function() {
  if (!pasteClickClientPhone) return;
  $(this).val('+');
  pasteClickClientPhone = false;
});

const arr1 = [0, 53.915955, 53.915955, 53.91599, 53.9159916, 53.9159733, 53.9159383];
const arr2 = [0, 27.4918116, 27.4918116, 27.4917833, 27.491725, 27.4915433, 27.4914716];
const merge = arr1.map((v, i) => [v, arr2[i]]);

function getData() {
  //...
  return new Promise((resolve, reject) => {
    xhr.onreadystatechange = function () {
        if (xhr.readyState != 4) reject(xhr.statusText);
        if (xhr.status != 200) {
          reject(xhr.statusText);
        } else {
          resolve(xhr.responseText);
        }
    };
    xhr.send();
  });
}

// use

getData()
  .then(function(response){
    console.log('Its OK', response);
  })
  .catch(function(errorText){
    console.log('Error:', errorText);
  });

if (document.referrer.startsWith(document.location.origin)) {
     console.warn('Снова привет!');
} else {
     console.warn('Обычный переход');
}