Answer Posted / rajender

function isEmail (s) {
if (isEmpty(s))
if (isEmail.arguments.length == 1) return defaultEmptyOK;
else return (isEmail.arguments[1] == true);
if (isWhitespace(s)) return false;
var i = 1;
var sLength = s.length;
while ((i < sLength) && (s.charAt(i) != "@")) {
i++
}
if ((i >= sLength) || (s.charAt(i) != "@")) return false;
else i += 2;
while ((i < sLength) && (s.charAt(i) != ".")) {
i++
}
if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
else return true;
}

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