wylie.js
function validHex(t) {
	for (var i = 0; i < t.length; i++) {
		var c = t.charAt(i);
		if (!((c >= 'a' && c <= 'f') || (c >= '0' && c <= '9'))) return false;
	}
	return true;
}
function validHex(t) {
	for (var i = 0; i < t.length; i++) {
		var c = t.charAt(i);
		if (!((c >= 'a' && c <= 'f') || (c >= '0' && c <= '9'))) return false;
	}
	return true;
}
function validHex ( t ) { for ( var i = 0 ; i < t . length ; i ++ ) { var c = t . charAt ( i ) ; if ( ! ( ( c >= 'a' && c <= 'f' ) || ( c >= '0' && c <= '9' ) ) ) return false ; } return true ; }
does this string consist of only hexadecimal digits?
does this string consist of only hexadecimal digits?