A slider and an electronic apparatus containing the slider, the slider including upper and lower board bodies, a first metal part positioned on the upper board body and connected to a capacitive touch sensor, the capacitive touch sensor being arranged on the circuit board of an electronic apparatus containing the slider; and a second metal part positioned on the lower board body and connected to a ground end (terminal), the ground end being arranged on the circuit board of the electronic apparatus containing the slider; the first and second metal parts are respectively positioned at the same end of the upper board body and the lower board body, and the first and second metal parts constitute a capacitor, the capacitance of which provides for detecting the open mode and closed mode of the slider.