Getting text of a drop down for a text field

Getting text of a drop down for a text field

I have a drop down that is a list of addresses each separated by the delimiter ",". When an address is selected I need to split the address at the delimiter and place each part into corresponding text fields e.g. company name, address_1, address_2, etc. Here is my jsfiddle so far. I know Im headed in the right direction, but I can't get it to work. Any help would be appreciated. Also, I don't really know JS or jquery very well so keep that in mind.  https://jsfiddle.net/yn37qe5a/3/