regionOverset

Summary

A region’s display state within a region chain.

Note: This property is read-only.

var regionState = region.regionOverset;

Returns an object of type StringString

A region’s display state within a region chain:

overset indicates the region is the last in the chain, and does not have enough room to display remaining content. See region-fragment for display options.
empty indicates content was accommodated by previous regions in the chain, or that no content is available to flow into the chain.
fit indicates various scenarios:
- When content appears within the last region in the chain but does not overflow it, as described above in overset
- For regions that flow content into subsequent regions in the chain
- For regions that are too small to display the next available item of content, such as an image, which gets pushed into a subsequent region
- For elements that no longer behave as a region, which occurs when their flow-from property reverts to none

Check if region needs to be deleted or appended:

if (region.regionOverset == 'empty') {
    // delete region?
} else if (region.regionOverset == 'overset') {
    // add additional regions?
}

Not to be confused with overset, which indicates whether the overall named flow features too few display regions.