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ViewToken Object Type

ViewToken object is returned as one of the properties in the onViewableItemsChanged callback (for example, in the FlatList component). It is exported by ViewabilityHelper.js.

Example​

JavaScript
{
  item: {key: "key-12"},
  key: "key-12",
  index: 11,
  isViewable: true
}

Keys and values​

index​

Unique numeric identifier assigned to the data element.

TypeOptionalnumberYes

isViewable​

Specifies if at least some part of list element is visible in the viewport.

TypeOptionalbooleanNo

item​

Item data

TypeOptionalanyNo

key​

Key identifier assigned to the data element extracted to the top level.

TypeOptionalstringNo

section​

Item section data when used with SectionList.

TypeOptionalanyYes

Used by​