Electronic device for displaying screen in display area of deformable display, and method therefor

An electronic device comprising:

• a first housing;
• a second housing movable with respect to the first housing;
• a display including a display area configured to be extended or retracted according to a movement of the second housing;
• and
• at least one processor, comprising processing circuitry,
• wherein at least one processor, individually and/or collectively, is configured to:
• identify, while displaying a first portion of a content within the display area, that a size of the display area visible outside of the first housing is extended;
• based on identifying that the size of the display area is extended, identify an attribute of the content displayed through the display area;
• and
• control the electronic device to display, based on the attribute, together with the first portion of the content, a second portion connected to the first portion within the content, in the display area having the extended size.