1. только на английском
var only_english = 'abcdAbDKDk',
mixed = 'سلامaaSDSD';
if (/[^A-Za-z]/g.test(only_english)) {
alert('"only_english" contains characters other than English');
} else {
alert('"only_english" contains only English characters');
}
if (/[^A-Za-z]/g.test(mixed)) {
alert('"mixed" contains characters other than English');
} else {
alert('"mixed" contains only English characters');
}
2. Только на персидском
var only_persian = 'سلام',
mixed = 'سلامaaSDSD';
if (/[^\u0600-\u06FF]/g.test(only_persian)) {
alert('"only_persian" ontains characters other than Persian');
} else {
alert('"only_persian" ontains only Persian characters');
}
if (/[^\u0600-\u06FF]/g.test(mixed)) {
alert('"mixed" contains characters other than Persian');
} else {
alert('"mixed" contains only Persian characters');
}
3. Только цифры
var only_numbers = '12334',
mixed = '3124adqad';
if (/[^0-9]/g.test(only_numbers)) {
alert('"only_numbers" does not contain only numbers');
} else {
alert('"only_numbers" contains only numbers');
}
if (/[^0-9]/g.test(mixed)) {
alert('"mixed" does not contain only numbers');
} else {
alert('"mixed" contains only numbers');
}