An input device (100) includes a housing (80), a base (40), a shaft (20), a first elastic member (60), and at least one second elastic member (70). The housing has a cavity (800), a first end and an opposite second open end. The first end has a hole (802) communicated with the cavity. The base is pivotably received in the cavity of the housing with part of the base protruding out of the cavity from the hole. The base defines a through hole (406) and includes at least one protrusion (408). The shaft is slidably received in the through hole of the base. The first elastic member provides a force to reset the shaft. The second elastic member connected to the base and the housing for providing a force to reset the base. The present invention also provides an electronic device employing the input device.