1 var decode = function(m) {
 2     try {
 3         m = decodeURIComponent(m);
 4     } catch(e) {}
 5     var s = m.split("%");
 6     if (s.length > 1) {
 7         s.shift();
 8         for(var i = 0; i < s.length; i++) {
 9             var t = s[i];
10             t = parseInt(t, 16);
11             t = t + 256;
12             t = t - 201;
13             t = t.toString(16);
14             s[i] = t;
15         }
16         m = ‘%‘+s.join(‘%‘);
17         return decodeURIComponent(m);
18     } else {
19         return m;
20     }
21 }
22 
23 var encode = function(i) {
24     i = encodeURIComponent(i);
25     i = i.replace(/%(.{2})/gi, function(l) {
26         var m = l.replace("%", "");
27         console.log(m);
28         m = parseInt(m, 16);
29         m = parseInt(‘201‘) + m;
30         m = m % 256;
31         m = m.toString(16);
32         if (m.length < 2) {
33             m = "0" + m
34         }
35         m = "%" + m;
36         return m
37     });
38     return i;
39 }