blockSize property

double get blockSize

The blockSize read-only property of the ResizeObserverSize interface returns the length of the observed element's border box in the block dimension. For boxes with a horizontal , this is the vertical dimension, or height; if the writing-mode is vertical, this is the horizontal dimension, or width.

Note: For more explanation of writing modes and block and inline dimensions, read Handling different text directions.

Implementation

external double get blockSize;