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Ввод числа с запятой
Введите текст только числа и запятая (может быть пропущена)
Решение для вопроса
http://goo.gl/IsdT0z
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Паттерн
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\d+(?:,{1}\d+)
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Паттерн из Справки
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\d+(,{1}\d+)?
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