Encryption and decryption of coordinates in MapAbc

Turn http://xying.spaces.live.com/Blog/cns! C20F968B904CD5D6! 176. entry // MapAbc uses the js method of coordinate transformation in the encoding coordinate and 10 Progress mode. It is only for reference var _ keys _ = [[0, 2, 1, 2, 8, 9, 4, 1, 7, 2, 5, 3, 9], [0, 3, 2, 2, 9, 5, 8, 2, 6, 8, 4, 6, 3], [1, 5, 2, 7, 1, 4, 7, 2, 4, 1, 4, 3, 0], [0, 7, 8, 3, 4, 9, 0, 6, 7, 7, 4, 4, 2], [0, 2, 1, 8, 4, 9, 3, 2, 3, 1, 5, 7, 8], [0, 0, 9, 5, 4, 7, 3, 0, 8, 7, 5, 2, 8], [0, 1, 5, 1, 1, 8, 2, 7, 1, 9, 1, 3, 5], [0, 5, 2, 5, 6, 0, 3, 4, 6, 7, 1, 3, 5], [1, 3, 2, 1, 8, 1, 8, 3, 7, 9, 2, 7, 0], [1, 2, 7, 7, 4, 3, 1, 5, 5, 0, 6, 4], [1, 5, 2, 8, 9, 2, 5, 9, 6, 7, 3, 3, 5], [1, 7, 9, 4, 5, 0, 9, 4, 9, 6, 1, 9, 9], [0, 6, 8, 3, 3, 6, 3, 5, 2, 0, 0, 9, 1], [1, 1, 1, 4, 7, 8, 6, 9, 6, 8, 8, 4, 6], [0, 5, 2, 1, 2, 5, 7, 0, 0, 4, 7, 4, 1], [0, 7, 6, 4, 2, 3, 9, 0, 7, 8, 5, 6, 7], [0, 1, 7, 6, 0, 5, 4, 7, 6, 7, 7, 5, 7], [0, 5, 2, 9, 8, 1, 7, 8, 3, 8, 5, 4, 5], [0, 4, 3, 1, 2, 8, 3, 7, 0, 9, 4, 8, 8], [1, 0, 6, 7, 9, 4, 3, 5, 2, 9, 8, 7], [1, 6, 4, 4, 6, 7, 1, 4, 4, 2, 6, 7, 5], [0, 8, 1, 7, 7, 5, 2, 6, 4, 3, 9, 7, 5], [1, 7, 0, 5, 6, 2, 5, 2, 7, 4, 6, 2, 8], [0, 4, 9, 2, 3, 0, 5, 4, 7, 8, 7, 0, 5], [1, 1, 0, 5, 1, 7, 2, 8, 7, 2, 6, 9, 3], [1, 4, 2, 3, 6, 1, 5, 3, 2, 0, 3, 6, 2], [1, 1, 6, 5, 1, 0, 6, 8, 9, 7, 1, 7, 9], [0, 6, 5, 4, 0, 7, 1, 7, 6, 2, 5, 4, 2], [1, 9, 8, 6, 6, 8, 4, 5, 4, 0, 4, 0], [1, 2, 7, 1, 5, 0, 6, 8, 0, 1, 3, 7, 9], [1, 1, 6, 4, 9, 8, 6, 0, 6, 2, 1, 9, 8], [0, 0, 1, 9, 5, 3, 9, 6, 7, 4, 1, 1], [0, 2, 8, 5, 7, 8, 6, 7, 3, 3, 1, 6, 4], [1, 8, 2, 5, 8, 4, 7, 6, 8, 8, 5, 7, 6], [0, 8, 3, 4, 9, 6, 1, 7, 8, 3, 0, 5, 5], [1, 3, 2, 6, 7, 4, 2, 8, 7, 4, 9, 6, 8], [1, 8, 8, 9, 3, 9, 1, 8, 5, 7, 2, 5, 0], [0, 5, 8, 3, 1, 8, 8, 0, 3, 9, 3, 8, 1], [1, 6, 0, 1, 1, 0, 3, 4, 3, 3, 3, 5, 9], [1, 0, 5, 1, 7, 9, 6, 2, 4, 6, 0, 3, 5], [1, 8, 2, 0, 9, 7, 1, 0, 5, 5, 8, 0, 6], [1, 8, 9, 6, 7, 3, 9, 4, 1, 9, 6, 6, 2], [0, 6, 0, 0, 8, 2, 6, 5, 9, 4, 1, 6, 2], [1, 7, 9, 7, 9, 4, 4, 2, 1, 1, 5, 7, 4], [1, 3, 0, 4, 3, 4, 6, 8, 6, 9, 1, 7, 0], [0, 1, 2, 3, 9, 4, 1, 8, 7, 2, 2, 9, 8], [1, 6, 5, 3, 2, 7, 6, 6, 9, 0, 0, 7, 7], [1, 6, 8, 4, 9, 7, 8, 0, 3, 6, 5, 4, 8], [0, 6, 6, 0, 9, 9, 4, 5, 5, 6, 8, 3, 7], [1, 0, 1, 3, 4, 0, 0, 1, 4, 8, 5, 7, 0], [1, 0, 2, 5, 8, 2, 2, 4, 8, 9, 7, 1, 6], [1, 4, 2, 6, 6, 8, 4, 5, 6, 6, 4, 5, 9], [1, 4, 4, 1, 7, 2, 0, 4, 6, 3, 3, 6, 7], [0, 2, 2, 3, 8, 0, 0, 8, 6, 0, 2, 1, 7], [0, 9, 4, 4, 8, 1, 2, 7, 3, 2, 6, 8, 0], [0, 9, 8, 4, 2, 1, 4, 5, 2, 4, 9, 5, 1], [0, 7, 2, 4, 7, 4, 3, 2, 4, 1, 5, 6, 9], [1, 1, 8, 4, 8, 8, 8, 4, 3, 4, 1, 2, 5], [0, 3, 2, 7, 5, 7, 0, 2, 7, 4, 5, 3, 5], [0, 3, 0, 4, 6, 6, 5, 7, 2, 1, 9, 5], [1, 5, 6, 0, 1, 3, 2, 7, 3, 0, 9, 8, 6], [0, 5, 5, 1, 7, 1, 0, 7, 9, 0, 3, 5, 7], [0, 5, 4, 9, 7, 9, 7, 3, 8, 0, 1, 6, 3], [1, 9, 2, 7, 3, 7, 9, 4, 3, 9, 8, 2], [0, 3, 1, 8, 9, 0, 9, 0, 4, 5, 5, 0, 9], [1, 8, 6, 1, 7, 7, 2, 4, 7, 9, 2, 0, 8], [0, 6, 1, 2, 7, 1, 4, 8, 4, 1, 1, 6, 0], [0, 3, 9, 8, 5, 5, 3, 0, 8, 7, 9, 3, 5], [0, 8, 4, 3, 7, 3, 1, 8, 2, 9, 1, 4, 7], [0, 1, 5, 3, 4, 0, 5, 5, 5, 8, 0, 7, 2], [0, 1, 7, 1, 8, 2, 1, 9, 8, 6, 1, 7, 0], [0, 7, 1, 6, 9, 7, 2, 7, 2, 4, 4, 3, 6], [0, 6, 2, 7, 2, 3, 4, 9, 3, 0, 1, 6, 3], [0, 2, 9, 1, 9, 9, 9, 1, 9, 5, 4, 4], [0, 1, 8, 7, 0, 0, 5, 2, 1, 5, 7, 4, 6], [1, 9, 0, 8, 7, 3, 3, 5, 5, 4, 9, 0, 1], [1, 5, 8, 0, 1, 7, 0, 2, 3, 7, 3, 2, 9], [1, 3, 2, 0, 5, 2, 7, 5, 0, 2, 6, 8, 1], [0, 2, 7, 2, 3, 2, 2, 9, 6, 9, 4, 1, 6], [1, 6, 4, 7, 9, 6, 5, 9, 5, 8, 2, 7, 1], [1, 8, 1, 2, 6, 0, 2, 4, 0, 8, 0, 1, 6], [1, 6, 2, 4, 1, 2, 4, 1, 7, 2, 7, 0, 6], [0, 1, 8, 0, 5, 0, 4, 5, 5, 1, 0, 4, 7], [0, 8, 7, 6, 4, 3, 5, 5, 7, 8, 4, 9, 0], [0, 2, 7, 7, 0, 1, 6, 6, 1, 0, 9, 3, 5], [0, 7, 6, 9, 8, 3, 8, 6, 2, 9, 3, 7, 0], [1, 6, 6, 6, 0, 3, 0, 1, 0, 2, 5, 6, 1], [0, 0, 4, 5, 1, 0, 9, 4, 4, 9, 4, 0, 9], [0, 1, 6, 9, 4, 7, 5, 7, 8, 3, 5, 7, 0], [1, 2, 7, 1, 6, 1, 5, 2, 8, 6, 3, 8], [1, 9, 1, 6, 7, 5, 1, 7, 4, 7, 6, 1, 8], [1, 7, 6, 7, 0, 2, 9, 6, 9, 8, 6, 7, 8], [0, 9, 8, 7, 3, 8, 1, 5, 2, 5, 2, 7, 5], [0, 7, 3, 5, 7, 9, 7, 6, 6, 9, 1, 7, 5], [1, 6, 7, 3, 4, 4, 7, 6, 2, 6, 6, 2, 3], [0, 1, 4, 2, 2, 8, 5, 0, 9, 2, 7, 3, 1], [0, 1, 4, 2, 1, 0, 0, 2, 1, 8, 9, 8, 3], [1, 7, 0, 8, 7, 9, 9, 6, 4, 8, 6, 2, 2], [1, 9, 3, 9, 9, 8, 7, 0, 8, 1, 1, 7, 3], [1, 0, 4, 3, 5, 8, 0, 4, 6, 5, 4, 5, 8], [0, 4, 8, 0, 5, 2, 3, 3, 9, 4, 2, 3], [0, 7, 9, 0, 9, 7, 2, 7, 7, 0, 4, 8, 5], [1, 6, 5, 5, 3, 3, 2, 6, 1, 3, 4, 7, 1], [0, 2, 9, 0, 0, 2, 9, 1, 8, 2, 8, 4], [1, 3, 2, 5, 0, 6, 2, 5, 3, 3, 6, 1], [1, 9, 2, 9, 3, 3, 8, 9, 9, 7, 2, 3, 7], [1, 1, 8, 4, 0, 8, 2, 4, 8, 0, 0, 9, 2], [1, 5, 2, 6, 0, 6, 1, 3, 0, 4, 7, 3, 8], [1, 9, 3, 8, 1, 1, 7, 8, 6, 9, 0, 6, 8], [1, 3, 2, 7, 7, 2, 2, 4, 2, 5, 8, 3, 0], [1, 1, 1, 0, 7, 7, 3, 4, 7, 3, 6, 8], [0, 9, 4, 2, 8, 9, 4, 8, 4, 3, 2, 5, 3], [0, 1, 0, 9, 2, 7, 2, 3, 9, 4, 5, 0, 8], [1, 0, 4, 5, 8, 4, 0, 0, 5, 2, 2, 1, 2], [0, 5, 0, 4, 5, 3, 2, 5, 4, 1, 3, 6, 9], [1, 3, 0, 2, 7, 8, 1, 7, 7, 3, 5, 5, 9], [1, 3, 7, 0, 0, 5, 8, 1, 7, 5, 6, 5, 2], [1, 8, 1, 9, 9, 9, 4, 8, 6, 0, 7, 3], [0, 8, 3, 6, 2, 7, 4, 2, 1, 9, 1, 6, 8], [0, 4, 4, 4, 2, 6, 0, 4, 0, 1, 5, 1, 7], [1, 2, 7, 4, 7, 6, 6, 3, 7, 7, 7, 2, 9], [0, 9, 8, 9, 3, 3, 3, 9, 0, 7, 4, 2, 3], [0, 7, 6, 0, 9, 1, 7, 2, 4, 5, 8, 3, 3], [1, 6, 1, 5, 5, 3, 1, 3, 2, 1, 0, 5, 6], [0, 6, 2, 4, 1, 6, 6, 3, 4, 9, 2, 7, 0], [1, 6, 3, 2, 3, 6, 1, 7, 7, 5, 6, 7, 1], [1, 0, 4, 9, 2, 3, 3, 6, 2, 6, 9, 3, 2], [0, 3, 7, 3, 9, 1, 3, 9, 5, 8, 8, 9], [1, 9, 0, 0, 3, 0, 9, 1, 2, 7, 8, 0, 3], [1, 0, 1, 2, 7, 7, 0, 0, 1, 8, 4, 1, 1], [0, 0, 5, 5, 9, 6, 9, 8, 1, 2, 1, 7, 2], [0, 1, 8, 7, 9, 0, 3, 5, 6, 3, 2, 9, 4], [1, 3, 1, 5, 7, 5, 0, 8, 5, 3, 2, 5, 0], [1, 1, 7, 3, 5, 0, 7, 7, 9, 6, 8, 9, 0], [0, 7, 7, 0, 9, 4, 2, 8, 8, 0, 2, 0], [1, 6, 5, 8, 3, 1, 0, 9, 0, 2, 7, 2, 9], [1, 3, 5, 8, 4, 7, 6, 3, 1, 4, 3, 4, 7], [0, 8, 8, 7, 8, 2, 7, 0, 3, 9, 6, 2, 9], [1, 1, 6, 2, 6, 7, 5, 2, 5, 0, 8, 5], [0, 9, 6, 7, 3, 0, 2, 3, 9, 5, 3, 7, 4], [1, 5, 2, 7, 3, 6, 0, 8, 3, 3, 9, 0, 3], [0, 3, 6, 8, 9, 1, 7, 7, 3, 8, 7, 8], [0, 1, 2, 5, 4, 9, 8, 0, 3, 6, 4, 0, 4], [1, 2, 4, 1, 6, 8, 1, 5, 8, 3, 6, 4, 3], [1, 9, 3, 1, 0, 8, 4, 4, 0, 1, 6, 0, 8], [0, 4, 5, 1, 0, 2, 1, 7, 1, 6, 1, 3], [0, 9, 5, 6, 8, 2, 2, 4, 0, 3, 9, 8, 1], [1, 9, 3, 5, 4, 3, 1, 2, 2, 2, 0, 8, 7], [0, 5, 6, 8, 1, 5, 7, 7, 8, 9, 4, 0, 6], [1, 0, 4, 6, 4, 6, 7, 4, 6, 0, 3, 6, 2], [1, 3, 3, 0, 2, 5, 3, 1, 9, 2, 3, 6, 8], [0, 6, 9, 6, 3, 6, 9, 6, 2, 1, 5, 0, 7], [1, 6, 5, 3, 0, 0, 0, 6, 2, 3, 8, 6, 0], [1, 0, 7, 1, 2, 0, 3, 0, 3, 0, 8, 8, 0], [0, 7, 1, 4, 3, 1, 8, 6, 7, 8, 1, 5, 4], [0, 6, 3, 5, 5, 4, 8, 9, 4, 8, 3, 1, 7], [0, 6, 4, 3, 1, 0, 7, 2, 9, 0, 5, 6, 7], [0, 6, 3, 7, 7, 0, 6, 8, 6, 7, 4, 6, 0], [0, 4, 2, 7, 2, 4, 1, 4, 6, 1, 8, 1, 7], [1, 1, 7, 9, 0, 7, 0, 5, 1, 8, 6, 3, 5], [1, 2, 0, 2, 7, 2, 7, 9, 1, 2, 7, 0, 3], [0, 3, 3, 6, 2, 0, 9, 1, 1, 0, 3, 5, 8], [1, 4, 0, 9, 9, 2, 5, 6, 5, 6, 8, 0, 5], [0, 3, 5, 3, 3, 3, 4, 6, 7, 5, 7, 0, 5], [0, 5, 8, 8, 5, 8, 5, 4, 7, 0, 5, 7, 3], [0, 5, 0, 7, 6, 4, 2, 7, 8, 3, 6, 1, 4], [0, 4, 7, 8, 6, 5, 3, 7, 7, 5, 7, 0, 7], [1, 3, 6, 5, 3, 0, 8, 5, 4, 9, 7, 7, 1], [1, 4, 8, 2, 8, 2, 8, 3, 4, 9, 4, 6, 7], [1, 4, 1, 6, 9, 4, 5, 7, 7, 4, 6, 7], [0, 2, 8, 2, 3, 0, 7, 7, 1, 0, 1, 1, 0], [1, 2, 2, 4, 5, 4, 7, 1, 0, 1, 8, 6, 7], [0, 0, 7, 2, 4, 7, 2, 8, 2, 4, 4, 3, 9], [1, 9, 1, 3, 2, 4, 1, 3, 3, 7, 5, 6, 1], [1, 4, 7, 4, 6, 8, 6, 7, 4, 4, 1, 2, 8], [0, 1, 6, 7, 3, 9, 0, 4, 7, 2, 9, 6, 7], [0, 1, 3, 9, 1, 1, 1, 1, 6, 3, 0, 1, 1], [1, 2, 7, 0, 2, 0, 7, 9, 7, 2, 1, 5, 2], [0, 9, 1, 0, 4, 2, 8, 2, 2, 4, 2, 4, 0], [1, 1, 7, 9, 7, 9, 3, 0, 5, 3, 4, 5, 2], [0, 0, 7, 4, 3, 0, 8, 6, 7, 7, 7, 9, 6], [0, 7, 0, 4, 0, 6, 7, 6, 3, 2, 0, 7, 1], [0, 4, 8, 8, 0, 5, 3, 0, 7, 8, 4, 7, 9], [0, 6, 3, 3, 3, 6, 6, 3, 7, 0, 4, 8, 3], [0, 1, 2, 0, 6, 0, 3, 1, 0, 9, 9, 8, 0], [0, 7, 0, 3, 8, 2, 5, 0, 7, 5, 0, 0, 4], [1, 8, 8, 8, 2, 0, 6, 2, 5, 6, 2, 3, 2], [1, 6, 2, 5, 8, 0, 1, 9, 7, 3, 7, 6, 0], [0, 3, 6, 1, 9, 1, 6, 8, 2, 6, 5, 2, 5], [0, 3, 9, 7, 8, 9, 4, 5, 4, 8, 5, 5, 1], [1, 1, 5, 5, 2, 5, 3, 4, 5, 3, 5, 0, 9], [1, 0, 9, 4, 9, 6, 1, 7, 0, 0, 6, 0, 1], [0, 8, 4, 9, 9, 9, 3, 4, 1, 3, 5, 7], [0, 7, 8, 0, 0, 3, 5, 5, 9, 4, 1, 8, 1], [1, 7, 3, 7, 6, 3, 2, 5, 6, 2, 7, 5, 0], [0, 0, 2, 6, 0, 6, 6, 2, 7, 6, 1, 6, 2], [1, 1, 6, 4, 7, 7, 9, 7, 0, 6, 2, 6], [0, 2, 1, 1, 4, 7, 6, 8, 8, 8, 9, 4, 3], [0, 0, 8, 7, 5, 1, 9, 3, 1, 9, 8, 6, 0], [0, 3, 4, 4, 0, 7, 1, 8, 7, 2, 7, 9, 9], [1, 0, 4, 5, 3, 6, 0, 6, 6, 6, 4, 1, 5], [0, 9, 7, 9, 9, 5, 9, 2, 3, 0, 4, 6, 2], [1, 6, 5, 2, 7, 2, 1, 3, 5, 2, 5, 2, 1], [1, 9, 9, 4, 8, 6, 3, 7, 8, 3, 3, 0, 6], [0, 8, 2, 6, 6, 7, 8, 2, 1, 3, 2, 9, 2], [0, 4, 8, 1, 9, 2, 4, 8, 4, 5, 4, 6, 4], [1, 1, 7, 0, 7, 3, 5, 1, 4, 9, 5, 3, 1], [1, 7, 8, 8, 3, 5, 3, 1, 5, 7, 6, 1, 9], [1, 4, 5, 6, 5, 3, 2, 5, 3, 0, 3, 5, 5], [0, 0, 2, 1, 3, 8, 9, 1, 0, 9, 7, 6, 7], [0, 0, 7, 6, 1, 9, 1, 9, 5, 8, 9, 4, 0], [1, 5, 4, 4, 6, 8, 7, 3, 9, 9, 0, 7, 4], [1, 3, 0, 4, 8, 1, 2, 3, 9, 7, 1, 9, 5], [1, 2, 6, 1, 4, 6, 9, 4, 7, 1, 1, 2, 6], [0, 1, 6, 7, 5, 8, 3, 2, 7, 0, 4, 1, 1], [1, 6, 2, 7, 8, 7, 6, 8, 7, 2, 0, 3, 3], [0, 2, 1, 9, 2, 6, 7, 5, 9, 5, 2, 2], [0, 5, 2, 0, 4, 7, 7, 3, 8, 1, 5, 0, 9], [1, 6, 5, 8, 6, 4, 0, 9, 6, 9, 0, 1, 8], [1, 2, 0, 8, 7, 9, 2, 4, 4, 0, 9, 8, 9], [1, 6, 5, 2, 0, 6, 1, 0, 4, 4, 1, 5, 8], [1, 5, 4, 2, 5, 6, 2, 5, 6, 2, 2, 9, 5], [1, 6, 9, 7, 2, 5, 1, 0, 6, 9, 1, 8, 1], [0, 0, 3, 9, 9, 0, 6, 7, 9, 5, 7, 4, 6], [1, 5, 8, 9, 9, 0, 6, 7, 9, 7, 9, 6, 1], [1, 3, 6, 4, 6, 3, 6, 8, 4, 5, 2, 8, 3], [0, 7, 4, 8, 4, 9, 7, 8, 0, 0, 1, 2, 2], [0, 4, 2, 9, 1, 3, 8, 8, 3, 0, 0, 9, 8], [1, 9, 0, 9, 2, 1, 2, 9, 3, 6, 5, 3, 2], [1, 1, 0, 2, 0, 5, 9, 9, 5, 4, 7, 8, 9], [1, 6, 0, 5, 9, 9, 1, 9, 0, 5, 4, 7, 1], [1, 0, 4, 0, 0, 3, 2, 4, 1, 6, 4, 6, 5], [1, 7, 3, 7, 3, 3, 7, 6, 1, 7, 7, 8, 6], [0, 9, 1, 7, 3, 5, 1, 8, 9, 3, 8, 6, 2], [1, 4, 9, 9, 3, 7, 5, 4, 4, 4, 4, 0], [0, 3, 7, 7, 4, 3, 6, 1, 1, 3, 5, 1, 6], [0, 8, 5, 4, 3, 9, 3, 3, 1, 3, 4, 8, 1], [1, 6, 1, 9, 4, 6, 4, 6, 4, 5, 2, 1, 5], [1, 1, 1, 6, 8, 3, 9, 1, 1, 3, 0, 9, 9], [0, 5, 1, 6, 8, 4, 8, 8, 2, 4, 4, 9, 2], [0, 2, 3, 0, 1, 4, 2, 7, 1, 9, 9, 0, 6], [0, 8, 4, 2, 5, 1, 4, 9, 5, 2, 0, 4, 3], [0, 9, 1, 2, 5, 0, 6, 5, 0, 3, 1, 8], [1, 7, 8, 7, 1, 7, 4, 6, 3, 3, 3, 9], [0, 3, 7, 2, 9, 4, 1, 5, 4, 7, 2, 1, 0], [1, 2, 8, 1, 1, 6, 4, 7, 8, 2, 0, 5, 2], [1, 8, 3, 5, 4, 8, 0, 9, 7, 8, 0, 1, 8], [1, 7, 9, 9, 0, 4, 5, 7, 2, 9, 0, 1, 9], [0, 6, 6, 5, 6, 7, 0, 4, 0, 7, 8, 5, 1], [0, 6, 0, 6, 3, 1, 1, 5, 0, 9, 2, 2, 3], [1, 6, 3, 5, 6, 7, 1, 6, 6, 9, 7, 4, 9], [0, 9, 5, 9, 8, 2, 4, 3, 3, 2, 3, 5, 6], [0, 1, 6, 3, 8, 9, 9, 2, 8, 2, 5, 8, 6], [1, 4, 7, 6, 6, 5, 7, 3, 3, 4, 1, 1], [1, 8, 2, 9, 0, 3, 8, 6, 8, 3, 3, 7, 3], [0, 2, 8, 4, 8, 5, 4, 8, 9, 5, 0, 5, 7]; function getDecodeCoordinate (enLonLat ){
// Take the last 4 characters of the encoding Coordinate
Var last4cha = enLonLat. substring (enLonLat. length-4, enLonLat. length );
// Convert the last 4 characters into the corresponding ASCII Value
Var last4asc = [];
For (var I = 0; I <last4cha. length; I ++ ){
Last4asc. push (last4cha. charCodeAt (I ));
}
// Take the last two digits of the four values to form a new 8-digit number, representing the index value of the key
Var keyposition = 0;
Keyposition | = last4asc [0] & 3;
Keyposition | = (last4asc [1] & 3) <2;
Keyposition | = (last4asc [2] & 3) <4;
Keyposition | = (last4asc [3] & 3) <6;
// Obtain the corresponding key based on the index value. The key is an array of 13 characters.
Var keys = _ keys _ [keyposition];
// Remove all the last four characters from the code Coordinate
Var lonlat = enLonLat. substring (0, enLonLat. length-4 );
// Convert all characters into corresponding ASCII values
Var lonlatasc = [];
For (var I = 0; I <lonlat. length; I ++ ){
Lonlatasc. push (lonlat. charCodeAt (I ));
}
// According to the first digit of the key...
Var key1 = keys [0];
Var fixed = 0;
Switch (key1 ){
Case 0:
Fixed = 23;
Break;
Case 1:
Fixed = 53;
Break;
}
// Process all asc values
For (var I = 0; I <lonlatasc. length; I ++ ){
Lonlatasc [I]-= fixed;
Lonlatasc [I]-= keys [I + 1];
}
// Convert the processed asc value to the corresponding asc code
Var lonlatcha = [];
For (var j = 0; j <lonlatasc. length; j ++ ){
Lonlatcha. push (String. fromCharCode (lonlatasc [j]);
}
Var deLonLat = lonlatcha. join ("");
Return deLonLat;
}
Function getEncodeCoordinate (MrY ){
Var xgh= 256;
Var AaZ = _ keys __;
Var AtF = 13;
Var Cwv = parseInt (Math. random () * xGH); var FEf = AaZ [Cwv];
Var wcW = "" + MrY;
Var UZO = new Array ();
For (var I = 0; I <wcW. length; I ++ ){
UZO. push (wcW. charCodeAt (I ));
}
Var InJ = FEf [0];
Var KvR = 0;
Switch (InJ ){
Case 0:
KvR = 23;
Break;
Case 1:
KvR = 53;
Break;
}
Lymphoma = UZO. length;
Var I = 0;
Var eag = "";
For (I = 0; I <UZO. length & I <FEf. length-2; I ++ ){
UZO [I] + = (parseInt (FEf [I + 1]) + parseInt (KvR ));
Eag + = String. fromCharCode (UZO [I]);
} Var mhcs = new Array (4 );
For (var I = 0; I <Mhd. length; I ++ ){
Mhcs [I] = (Math. random () * 10 );
Mhcs [I] + = 70;
<G id = "1"> 2 </G>;
<2;
}
Mhcs [0] = mhcs [0] | Cwv & 3;
<G id = "1"> 2 </G>;
<G id = "1"> </G>;
<G id = "1"> 6 </G>;
Eag + = String. fromCharCode (Major I/O groups [0], Major I/O groups [1], Major I/O groups [2], and major I/O groups [3]);
Return eag;
} Var originallon = "116.397945 ";
Var originallat = "39.90816999 ";
Var encodelon = getEncodeCoordinate (originallon );
Var encodelat = getEncodeCoordinate (originallat );
Var decodelon = getDecodeCoordinate (encodelon );
Var decodelat = getDecodeCoordinate (encodelat );
Document. write (originallon + "->" + encodelon + "<br/> ");
Document. write (originallat + "->" + encodelat + "<br/> ");
Document. write (encodelon + "->" + decodelon + "<br/> ");
Document. write (encodelat + "->" + decodelat + "<br/> ");
// Test Result: 116.397945-> hmkehuuukkILOF
// Result: 39.90816999-> lugtmsmoropJKJN
// Test Result: hmkehuuukkILOF-> 116.397945.
// Test Result: lugtmsmoropJKJN-> 39.90816999
// Note: The converted encoding coordinates are different each time because a random number (two places) is used in the Code. If you want a fixed value, you can change the random number to a fixed value.