Traverse traverse json object and call the callback function.

TraverseBytes is like Traverse but more efficient if use bytes.

Index is array key type.

String regular key-value json key type.

TimeLayout a common layout time format.

Key json key.

JSONTime is a common layout time format, fully compatible with JSON and GORM.

KeyType the json key type.

TraverseCallback callback function, will be called during traverse.