Filtering Look up Columns with Javascript

I'm trying to find a way to dynamically filter a look up column on the new and edit forms in SharePoint 2013.

I want to be able to get a value from the URL and use that to filter the look up choices. Something like, only show choices where "column A" equals "Value from URL"

Has anyone ever done this? or know of any references i can use? I do not want to filter the choices based on another column which seems to be the common question people ask.