DevinJB User

Hey guys, I'm very new here and was looking into a scripting option for what I need done. I know java and some JavaScript, but other than that I'm blank. All I'm trying to do with this script is get a value on a webpage and then save it somewhere - most likely on the users hard drive in a text file. It will also refresh the page and get the new loaded value every set interval of time (30 minutes - 1 hour). Can anyone help me out or point me in the right direction?