(JS implementation) the script for encrypting and decrypting coordinates in MapBar

A friend asked me this question. I found it and sent it today. I don't know if it is correct.
However, I personally think Mapbar is worth learning. At least I won't give you the coordinates of the codes.
I don't know if my Mapbar friends will tell me if they want to tell me. Well, it doesn't matter. I recently want to write an article to give you some personal suggestions. I think it's okay to say something bad. After a while, write it.

The following is the JavaScript code for encryption and decryption in the Mapbar. I made a simple description of what is in hexadecimal notation and hexadecimal notation. I also feel dizzy.
The result of the instance is as follows:
Value of sdsbwvjabfa after decryption: 121.46979, 31.23245
31.23245, 121.46979 encrypted value: IJSDSBZVJABFA
Of course, you can also use other coordinates for testing and testing.
Friendly reminder: the constant value in Mapbar may have changed. The value obtained by the current method is different from that obtained by Baidu.
The following code is copied and saved as a webpage.

Encryption and decryption in Mapbar (JS)
Copy codeThe Code is as follows:
<Script language = "javascript">
// A constant, but the value of encryption and decryption changes.
Var strLicenseKey = 699;
// Decrypt coordinates
Function jiemi (meT ){
Var W7pj =-1;
Var I524S = 0;
Var qk_X = '';
For (var I = 0; I <meT. length; I ++) {var j86T = parseInt (meT. charAt (I), 36)-10;
If (j86T> = 10) j86T = j86T-7; qk_X + = (j86T). toString (36 );
If (j86T> I524S) {W7pj = I; I524S = j86T} var U8T = parseInt (qk_X.substring (0, W7pj), 16 );
Var f9v8D = parseInt (qk_X.substring (W7pj + 1), 16 );
Var H1433 = new Array ();
H1433 [0] = (U8T + f9v8D-parseInt (strLicenseKey)/2;
H1433 [1] = (f9v8D-H1433 [0])/100000.0;
H1433 [0]/= 100000.0;
Return H1433 };
// Decrypted coordinate instance
Document. write ('This is the decrypted value of IJSDSBWVJABFA: <br>' + jiemi ('ijsdsbwvjabfa ') +' <br> ');
// Encrypt coordinates
Function jiami (e53, b92 _)
{
Var WVd94 = parseInt (parseFloat (e53) * 100000 );
Var j7_2 = parseInt (parseFloat (B92 _) * 100000 );
Var rpB = (j7_2-WVd94 + parseInt (strLicenseKey). toString (16 );
Var ie9 = (j7_2 + WVd94). toString (16 );
Var H1433 = '';
For (var I = 0; I <rpB. length; I ++)
{
Var k6A36 = parseInt (rpB. charAt (I), 16 );
H1433 + = (k6A36> = 10 )? (K6A36 + 7): k6A36) + 10). toString (36)
}
H1433 + = 'Z ';
For (var I = 0; I <ie9.length; I ++)
{
Var k6A36 = parseInt (ie9.charAt (I), 16 );
H1433 + = (k6A36> = 10 )? (K6A36 + 7): k6A36) + 10). toString (36)
}
Return H1433.toUpperCase ()
}
// Encrypt the instance
Document. write ('this is the 31.23245, 121.46979 encrypted value: <br> '+ jiami ('31. 100', '192. 100 '));
</Script>