<header>Check result</header>
<body>
<script>
function checkResult(original, validator) {
function wrapper(...params) {
let result = null;
while (validator(result = original(...params)) != true);
return result;
}
return wrapper;
}
const capitalize = str => {
if (!str) // проверка пустой строки
return str;
str = str.toLowerCase().trim();
let result = str[0].toUpperCase() + str.slice(1);
return result;
}
const credentials = () => {
let sName = capitalize(prompt("Enter surname"));
let name = capitalize(prompt("Enter name"));
let fatherName = capitalize(prompt("Enter father name"));
let fullName = sName + ' ' + name + ' ' + fatherName;
return { name, sName, fatherName, fullName };
}
const respectMe = checkResult(credentials, obj => {
let hasEmptyField = !obj.sName || !obj.fatherName || !obj.name; //проверка пустого поля
return !hasEmptyField;
});
let res = respectMe();
alert(res.name + "\n" + res.sName + "\n" + res.fatherName + "\n" + res.fullName);
</script>
</body>