Bug with <select multiple> about jquery.serializejson HOT 1 CLOSED

It's expected behavior.
I know it's a little confusing, but it's important that serializeJSON behaves exactly as Ruby Rack (see parse_nested_query explanation) when the params are sent by a regular HTML form. This ensures compatibility and robustness. Also, the other way around would also be confusing and it would create problems in some other scenarios.

Think about it: the tag names are not coupled to the type (input textfield vs select vs select-multiple). If you name it city then it's supposed to be a single value (each option will replace the value, thus the last option will be what it's shown in the serialized object). If you name it city[] then it's supposed to be an array (each selected option will be added to the array).

from jquery.serializejson.