using javascript to validation email before next field

JavaScript
/^[a-zA-Z0–9.!#$%&’*+\/=?^_`{|}~-]+@[a-zA-Z0–9](?:[a-zA-Z0–9-]{0,61} [a-zA-Z0–9])?(?:\.[a-zA-Z0–9](?:[a-zA-Z0–9-]{0,61}[a-zA-Z0–9])?)*$/
Source

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