Input device and electronic device

An input device comprising:

• a storage section configured to store a symbol string including a plurality of symbols;
• a display section configured to display the symbol string stored in the storage section;
• a touch sensor configured to detect a touch position on the display section;
• a control section;
• and
• a display switch section,
• wherein the control section specifies a to-be-deleted symbol string and a deletion reference position based on the touch position detected by the touch sensor,
• the control section switches the display state of the to-be-deleted symbol string on the display section to any one of a second half hiding state, a first half hiding state, and a full display state every time the display switch section is pressed during touch operation on the display section by a user,
• the second half hiding state is to hide a second half symbol string, out of the to-be-deleted symbol string, displayed behind the deletion reference position,
• the first half hiding state is to hide a first half symbol string, out of the to-be-deleted symbol string, displayed before the deletion reference position, and
• the full display state is to display the to-be-deleted symbol string in full.