Array/object url is encoded/decoded in the wrong way

[golddragon007]

This u.query.a = [1, 2, 3]; creates a=1&a=2&a=3 while the correct is a[0]=1&a[1]=2&a[2]=3
The currently generated URL can lead to query overload, which depends on the server (apache, lighttpd or Microsoft) understand differently. While the second one is the correct array GET structure.
In languages where associative array exists, the following is also valid:
For u.query.a = ['key1' => 1, 'key5' => 2, 'key3' => 3]; represented as a[key1]=1&a[key5]=2&a[key3]=3, this is most probably represented in JS as an object like u.query.a = {"key1": 1, "key5": 2, "key3": 3};.
Also, servers support multidimensional array/objects, which's not supported here.
u.query.a = [1, [2, 5], 3]; as a[0]=1&a[1][0]=2&a[1][1]=5&a[2]=3
u.query.a = {"key1": 1, "key5": [2, 5], "key3": 3}; as a[key1]=1&a[key5][0]=2&a[key5][1]=5&a[key3]=3
u.query.a = {"key1": 1, "key5": {"key1": 2, "key6": 5}, "key3": 3}; as a[key1]=1&a[key5][key1]=2&a[key5][key6]=5&a[key3]=3