What is required for a form to effectively submit data to a script?

For a form to effectively submit data to a script, it is essential that controls are mapped correctly to pass values. Mapping ensures that each control on the form, such as text boxes, dropdowns, or checkboxes, is associated with the correct variables in the script. This association allows the script to receive and process the data entered by the user, facilitating actions such as form validation, data storage, and user feedback.

When controls are properly mapped, the script can accurately interpret the input, leading to a seamless integration between the user's actions and the backend processing. This is vital for the script to execute the intended behavior based on user input and ensures that the data collection and program functionality operate smoothly.

While having unique names for each control and clear labels contributes to good form design and usability, they do not directly impact the data submission processing as effectively as proper mapping. Default values can enhance user experience by pre-filling information, but they don't influence the basic requirement of data submission to the script. Thus, the critical factor that ensures successful data submission is the correct mapping of controls to the variables in the script.