Diff'rent Strokes

Diff'rent Strokes is an American television sitcom, which aired on NBC from November 3, 1978, to May 4, 1985, and on ABC from September 27, 1985, to March 7, 1986. 

Janet played Willis' girlfriend Charlene Duprey in 10 episodes spanning seasons 3 to 6 from 1980 to 1984.