ViewToken Object Type
ViewToken object is returned as one of properties in the onViewableItemsChanged callback, for example in FlatList component. It is exported by ViewabilityHelper.js.
Example#
{ item: { key: "key-12" }, key: "key-12", index: 11, isViewable: true}Keys and values#
index#
Unique numeric identifier assigned to the data element.
| Type | Optional |
|---|---|
| number | Yes |
isViewable#
Specifies if at least some part of list element is visible in the viewport.
| Type | Optional |
|---|---|
| boolean | No |
item#
Item data
| Type | Optional |
|---|---|
| any | No |
key#
Key identifier assigned of the data element extracted to the top level.
| Type | Optional |
|---|---|
| string | No |
section#
Item section data when used with SectionList.
| Type | Optional |
|---|---|
| any | Yes |