QResizeObserver is a Quasar component that emits a
resize event whenever the wrapping DOM element / component (defined as direct parent of QResizeObserver) changes its size (width and/or height). Note that no polling is involved, but overusing it is costly too.
/* * No installation step is necessary. * It gets installed by default by @quasar/app v2+. */
Please note that QResizeObserver will issue an event as soon as it gets rendered and attached to DOM, so you can have the initial size of the container.