The following functions are used to extract the character in the string to the left or to the right. Left(), Right() functions are not available in Javascript.
function Left(str, n){ if (n <= 0) return ""; else if (n > String(str).length) return str; else return String(str).substring(0,n);}function Right(str, n){ if (n <= 0) return ""; else if (n > String(str).length) return str; else { var iLen = String(str).length; return String(str).substring(iLen, iLen - n); }}
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