A keyed node helps optimize cases where children are getting added, moved, removed, etc. Common examples include:
When you use a keyed node, every child is paired with a string identifier. This makes it possible for the underlying diffing algorithm to reuse nodes more efficiently.
Works just like Html.node
, but you add a unique identifier to each child
node. You want this when you have a list of nodes that is changing: adding
nodes, removing nodes, etc. In these cases, the unique identifiers help make
the DOM modifications more efficient.
module Html.Keyed exposing
( node
, ol
, ul
)
{-| A keyed node helps optimize cases where children are getting added, moved,
removed, etc. Common examples include:
- The user can delete items from a list.
- The user can create new items in a list.
- You can sort a list based on name or date or whatever.
When you use a keyed node, every child is paired with a string identifier. This
makes it possible for the underlying diffing algorithm to reuse nodes more
efficiently.
# Keyed Nodes
@docs node
# Commonly Keyed Nodes
@docs ol, ul
-}
import Html exposing (Attribute, Html)
import VirtualDom
{-| Works just like `Html.node`, but you add a unique identifier to each child
node. You want this when you have a list of nodes that is changing: adding
nodes, removing nodes, etc. In these cases, the unique identifiers help make
the DOM modifications more efficient.
-}
node : String -> List (Attribute msg) -> List ( String, Html msg ) -> Html msg
node =
VirtualDom.keyedNode
{-|-}
ol : List (Attribute msg) -> List ( String, Html msg ) -> Html msg
ol =
node "ol"
{-|-}
ul : List (Attribute msg) -> List ( String, Html msg ) -> Html msg
ul =
node "ul"