GL2 Form submit multiple records at once

[Tom V 7]

I have a form which lists the cars by location.  I want to select one car in each location and insert multiple records (location field, car id field) for each selected location.  Can someone provide some help creating the garage.script.js file.  The element names are like so: 

<input type="radio" name="location1" value="124">

<input type="radio" name="location1" value="62">

<input type="radio" name="location2" value="45">

<input type="radio" name="location2" value="33">

 

[Sim 284]

Why is JS needed? When you only need 1 form for that data?