Create A LookUp Column in SharePoint 2010
Why SharePoint Stack Exchange recommends it
SharePoint Stack Exchange answerers point people to it when a question about linking or pulling values between lists can be solved with a lookup column instead of custom code.
Recommended by 3 people across 3 different months, 2015 to 2016.
What it is
A short tutorial from dataBridge LLC showing how to create a lookup column in SharePoint 2010. It is a screen-based walkthrough of the out-of-the-box feature that links one list to another.
What people said
Recommends Naveen · 2015-05 · SharePoint Stack Exchange · on “Update list column dropdown value sharepoint”
Why do you wish to achieve this via jQuery? Or am I missing something here. You can achieve this using OOTB functionality of lookup columns. Watch this video [this video] which guides you through creating lookup column.
Recommends Ankit Kumar · 2016-05 · SharePoint Stack Exchange · on “Insert the values from list to another list when item created or updated”
Lookup column is the answer you are looking for. Try creating a Lookup column in Roadmap list and fetch the values using column of ProductList. Check this video on how to create lookup column: [this video]
Recommends Dylan Cristy · 2016-07 · SharePoint Stack Exchange · on “Need to link item in list A to specific item in list B”
You can create a link between items in one list to items in a different list by using a lookup column . In this case, you would create the lookup column on List A, and have it "look up" List B. You don't even need SP Designer to do it, you can do it right through the UI. There are numerous resources available online with instructions on how to create lookup columns, here is one [LINK] . Here is another (short video) [this video] .