Seleziona

Panoramica

Usa Select per un valore di modulo scelto da un elenco. Dropdown rimane l’API di livello superiore principale per menu, selettori, pannelli e pagine che combinano tali workflow.

Utilizzo

Stato non controllato

Usa defaultValue per impostare la priorità iniziale. Il componente select gestisce le modifiche successive alla selezione.

import { Select } from 'twenty-ui/primitives/input';

const PRIORITIES = [
  { value: 'low', label: 'Low' },
  { value: 'normal', label: 'Normal' },
  { value: 'high', label: 'High' },
];

export const PrioritySelect = () => (
  <Select.Root name="priority" defaultValue="normal" items={PRIORITIES}>
    <Select.Trigger aria-label="Priority">
      <Select.Value placeholder="Choose a priority" />
      <Select.Icon />
    </Select.Trigger>
    <Select.Portal>
      <Select.Positioner
        align="start"
        sideOffset={8}
        alignItemWithTrigger={false}
      >
        <Select.Popup>
          {PRIORITIES.map(({ value, label }) => (
            <Select.Item key={value} value={value}>
              <Select.ItemText>{label}</Select.ItemText>
              <Select.ItemIndicator />
            </Select.Item>
          ))}
        </Select.Popup>
      </Select.Positioner>
    </Select.Portal>
  </Select.Root>
);

Fornisci items a Root affinché Value visualizzi l’etichetta dell’elemento selezionato; senza di essi, il trigger mostra il valore non elaborato. Il valore selezionato può essere null quando non è selezionato nulla.

Anatomia

Componi le parti pubbliche all’interno di Select.Root. Trigger e Item eseguono il rendering solo dei rispettivi elementi figlio. Aggiungi esplicitamente Icon, ItemText e ItemIndicator quando desideri il chevron, l’etichetta e il segno di spunta predefiniti.

Select.Root
├── Select.Label
├── Select.Trigger
│   ├── Select.Value
│   └── Select.Icon
└── Select.Portal
    ├── Select.Backdrop
    └── Select.Positioner
        └── Select.Popup
            ├── Select.Arrow
            ├── Select.ScrollUpArrow
            ├── Select.List
            │   ├── Select.Group
            │   │   ├── Select.GroupLabel
            │   │   └── Select.Item
            │   │       ├── Select.ItemText
            │   │       └── Select.ItemIndicator
            │   └── Select.Separator
            └── Select.ScrollDownArrow

Parte	Scopo
`Root`	Gestisce la selezione, lo stato di apertura, i valori generici e l’integrazione con i moduli nativi.
`Label`	Associa un’etichetta visibile al trigger.
`Trigger`	Apre l’elenco e contiene il valore visualizzato.
`Valore`	Renderizza l’etichetta selezionata o un segnaposto.
`Icon`	Renderizza un chevron predefinito o elementi figlio personalizzati nel trigger.
`Portal`	Sposta il contenuto del popup nel contenitore del portal del tema o in un contenitore esplicito.
`Backdrop`	Fornisce uno sfondo facoltativo mentre il popup è aperto.
`Positioner`	Gestisce la geometria dell’ancora, il posizionamento, gli offset e il comportamento in caso di collisioni.
`Popup`	Renderizza la superficie del popup senza aggiungere un portal o un positioner.
`Elenco`	Fornisce un contenitore di scorrimento separato per le opzioni.
`Item`	Fornisce il comportamento di selezione per un’opzione.
`ItemText`	Identifica l’etichetta dell’opzione utilizzata per la ricerca durante la digitazione e l’allineamento del valore selezionato.
`ItemIndicator`	Renderizza il segno di spunta predefinito dell’opzione selezionata o elementi figlio personalizzati.
`Arrow`	Posiziona una freccia facoltativa rispetto all’ancora del popup.
`ScrollUpArrow`, `ScrollDownArrow`	Fa scorrere un elenco lungo al passaggio del mouse.
`Group`, `GroupLabel`	Raggruppa le opzioni correlate sotto un’etichetta.
`Separator`	Separa visivamente i gruppi.

Portal, List, Backdrop, le frecce e gli indicatori sono facoltativi. Usa Positioner intorno a Popup per il posizionamento, anche quando renderizzi il popup in linea senza un portal.

Stato controllato

Passa value e aggiornalo con onValueChange per gestire la stessa priorità nello stato di React. Il callback riceve il valore successivo e i dettagli dell’evento.

import { useState } from 'react';
import { Select } from 'twenty-ui/primitives/input';

const PRIORITIES = [
  { value: 'low', label: 'Low' },
  { value: 'normal', label: 'Normal' },
  { value: 'high', label: 'High' },
];

export const PrioritySelect = () => {
  const [priority, setPriority] = useState<string | null>('normal');

  return (
    <Select.Root
      name="priority"
      value={priority}
      onValueChange={setPriority}
      items={PRIORITIES}
    >
      <Select.Trigger aria-label="Priority">
        <Select.Value placeholder="Choose a priority" />
        <Select.Icon />
      </Select.Trigger>
      <Select.Portal>
        <Select.Positioner
          align="start"
          sideOffset={8}
          alignItemWithTrigger={false}
        >
          <Select.Popup>
            {PRIORITIES.map(({ value, label }) => (
              <Select.Item key={value} value={value}>
                <Select.ItemText>{label}</Select.ItemText>
                <Select.ItemIndicator />
              </Select.Item>
            ))}
          </Select.Popup>
        </Select.Positioner>
      </Select.Portal>
    </Select.Root>
  );
};

Selezione multipla

import { useState } from 'react';
import { Select } from 'twenty-ui/primitives/input';

const LANGUAGES = [
  { value: 'en', label: 'English' },
  { value: 'fr', label: 'French' },
  { value: 'es', label: 'Spanish' },
];

export const LanguageSelect = () => {
  const [languages, setLanguages] = useState<string[]>(['en']);

  return (
    <Select.Root
      multiple
      value={languages}
      onValueChange={setLanguages}
      items={LANGUAGES}
    >
      <Select.Trigger aria-label="Languages">
        <Select.Value placeholder="Choose languages" />
        <Select.Icon />
      </Select.Trigger>
      <Select.Portal>
        <Select.Positioner
          align="start"
          sideOffset={8}
          alignItemWithTrigger={false}
        >
          <Select.Popup>
            {LANGUAGES.map(({ value, label }) => (
              <Select.Item key={value} value={value}>
                <Select.ItemText>{label}</Select.ItemText>
                <Select.ItemIndicator />
              </Select.Item>
            ))}
          </Select.Popup>
        </Select.Positioner>
      </Select.Portal>
    </Select.Root>
  );
};

Con multiple, il valore è un array. Usa defaultValue={['en']} anziché value e onValueChange per una selezione multipla non controllata. I tipi generici della radice rappresentano il valore dell’opzione e se la selezione multipla è abilitata.

Stato di apertura

La selezione e la visibilità del popup sono indipendenti. Gli esempi precedenti lasciano la visibilità del popup non controllata. La selezione di un singolo valore chiude il popup; la selezione multipla lo mantiene aperto. Usa defaultOpen per impostare la visibilità iniziale; per impostazione predefinita è false. Passa open e aggiornalo con onOpenChange per controllare la visibilità. Questo esempio controlla il popup lasciando non controllata la priorità selezionata.

import { useState } from 'react';
import { Select } from 'twenty-ui/primitives/input';

const PRIORITIES = [
  { value: 'low', label: 'Low' },
  { value: 'normal', label: 'Normal' },
  { value: 'high', label: 'High' },
];

export const PrioritySelect = () => {
  const [open, setOpen] = useState(false);

  return (
    <Select.Root
      name="priority"
      defaultValue="normal"
      items={PRIORITIES}
      open={open}
      onOpenChange={setOpen}
    >
      <Select.Trigger aria-label="Priority">
        <Select.Value placeholder="Choose a priority" />
        <Select.Icon />
      </Select.Trigger>
      <Select.Portal>
        <Select.Positioner
          align="start"
          sideOffset={8}
          alignItemWithTrigger={false}
        >
          <Select.Popup>
            {PRIORITIES.map(({ value, label }) => (
              <Select.Item key={value} value={value}>
                <Select.ItemText>{label}</Select.ItemText>
                <Select.ItemIndicator />
              </Select.Item>
            ))}
          </Select.Popup>
        </Select.Positioner>
      </Select.Portal>
    </Select.Root>
  );
};

Combina con un campo

Racchiudi il select in Field.Root per associare il relativo trigger a un’etichetta visibile e a un testo di supporto. Il campo gestisce l’etichettatura e la convalida; il select mantiene il proprio stato di selezione e popup.

import { Field, Select } from 'twenty-ui/primitives/input';

const PRIORITIES = [
  { value: 'low', label: 'Low' },
  { value: 'normal', label: 'Normal' },
  { value: 'high', label: 'High' },
];

export const PriorityField = () => (
  <Field.Root name="priority">
    <Field.Label>Priority</Field.Label>
    <Select.Root name="priority" defaultValue="normal" items={PRIORITIES}>
      <Select.Trigger>
        <Select.Value />
        <Select.Icon />
      </Select.Trigger>
      <Select.Portal>
        <Select.Positioner
          align="start"
          sideOffset={8}
          alignItemWithTrigger={false}
        >
          <Select.Popup>
            {PRIORITIES.map(({ value, label }) => (
              <Select.Item key={value} value={value}>
                <Select.ItemText>{label}</Select.ItemText>
                <Select.ItemIndicator />
              </Select.Item>
            ))}
          </Select.Popup>
        </Select.Positioner>
      </Select.Portal>
    </Select.Root>
    <Field.Description>
      Choose how soon this record needs attention.
    </Field.Description>
  </Field.Root>
);

Composizione degli elementi

Componi contenuti arbitrari all’interno di Item. Inserisci l’etichetta ricercabile in ItemText; il contenuto aggiuntivo non diventa la relativa etichetta per la ricerca durante la digitazione. Fornisci elementi figlio a Icon o ItemIndicator per sostituire le relative icone predefinite, oppure ometti del tutto tali parti.

import { Select } from 'twenty-ui/primitives/input';

export const PrioritySelect = () => (
  <Select.Root defaultValue="high" items={{ high: 'High' }}>
    <Select.Trigger aria-label="Priority">
      <Select.Value />
      <Select.Icon />
    </Select.Trigger>
    <Select.Portal>
      <Select.Positioner
        align="start"
        sideOffset={8}
        alignItemWithTrigger={false}
      >
        <Select.Popup>
          <Select.Item value="high">
            <Select.ItemText>High</Select.ItemText>
            <span>Needs attention today</span>
            <Select.ItemIndicator />
          </Select.Item>
        </Select.Popup>
      </Select.Positioner>
    </Select.Portal>
  </Select.Root>
);

Tutte le parti che renderizzano elementi accettano attributi nativi, ref e le API di composizione render, className e style di Base UI. Ad esempio, usa render={<Button />} su Trigger per comporlo con un pulsante Twenty UI. Per un elemento di rendering diverso da un pulsante, imposta anche nativeButton={false}.

Posizionamento

Imposta size="sm" o size="md" in Trigger. Il posizionamento appartiene a Positioner; la destinazione del portal appartiene a Portal. Positioner mantiene le impostazioni predefinite di Base UI: side="bottom", align="center", sideOffset={0} e alignItemWithTrigger={true}. L’allineamento dell’elemento selezionato si applica all’input tramite puntatore quando lo spazio è sufficiente. Imposta alignItemWithTrigger={false} per utilizzare coerentemente il posizionamento ancorato. Gli esempi precedenti scelgono esplicitamente align="start" e sideOffset={8}.

import { useRef, useState } from 'react';
import { Button, Select } from 'twenty-ui/primitives/input';

const PRIORITIES = [
  { value: 'low', label: 'Low' },
  { value: 'normal', label: 'Normal' },
  { value: 'high', label: 'High' },
];

export const PositionedPrioritySelect = () => {
  const anchorRef = useRef<HTMLButtonElement>(null);
  const boundaryRef = useRef<HTMLDivElement>(null);
  const [portalContainer, setPortalContainer] = useState<HTMLDivElement | null>(
    null,
  );

  return (
    <div ref={boundaryRef}>
      <Button ref={anchorRef}>Position anchor</Button>
      <Select.Root defaultValue="normal" items={PRIORITIES}>
        <Select.Trigger aria-label="Priority">
          <Select.Value />
          <Select.Icon />
        </Select.Trigger>
        <Select.Portal container={portalContainer}>
          <Select.Positioner
            anchor={anchorRef}
            positionMethod="fixed"
            side="inline-end"
            align="start"
            alignItemWithTrigger={false}
            sideOffset={({ anchor }) => anchor.width / 4}
            alignOffset={4}
            collisionBoundary={boundaryRef.current ?? undefined}
            collisionPadding={12}
            collisionAvoidance={{ side: 'flip', align: 'shift' }}
            sticky
          >
            <Select.Popup>
              <Select.Arrow />
              <Select.List>
                {PRIORITIES.map(({ value, label }) => (
                  <Select.Item key={value} value={value}>
                    <Select.ItemText>{label}</Select.ItemText>
                    <Select.ItemIndicator />
                  </Select.Item>
                ))}
              </Select.List>
            </Select.Popup>
          </Select.Positioner>
        </Select.Portal>
      </Select.Root>
      <div ref={setPortalContainer} />
    </div>
  );
};

Positioner supporta anche ancore virtuali, funzioni di offset, arrowPadding e disableAnchorTracking. Portal utilizza il contenitore del portal del tema, a meno che non fornisca container. Un valore esplicito container={null} attende finché quel contenitore non è disponibile.

Moduli nativi e dettagli sui callback

Imposta name su Root per includere il valore selezionato in FormData. La selezione multipla invia una voce per ogni valore selezionato. form associa l’input nascosto a un modulo esterno e inputRef consente di accedere a quell’input. required, disabled e autoComplete mantengono il comportamento dei moduli nativi di Base UI. onValueChange e onOpenChange ricevono lo stato successivo e i dettagli dell’evento a monte, inclusi reason, l’event nativo, cancel() e allowPropagation(). La chiamata a cancel() impedisce la corrispondente modifica dello stato interno. Le radici controllate richiedono comunque di aggiornare value o open.

import { useState } from 'react';
import { Select } from 'twenty-ui/primitives/input';

const PRIORITIES = [
  { value: 'normal', label: 'Normal' },
  { value: 'high', label: 'High' },
];

type PrioritySelectProps = { canSetHighPriority: boolean };

export const PrioritySelect = ({ canSetHighPriority }: PrioritySelectProps) => {
  const [priority, setPriority] = useState<string | null>('normal');

  return (
    <Select.Root
      items={PRIORITIES}
      value={priority}
      onValueChange={(nextPriority, details) => {
        if (nextPriority === 'high' && !canSetHighPriority) {
          details.cancel();
          return;
        }
        setPriority(nextPriority);
      }}
    >
      <Select.Trigger aria-label="Priority">
        <Select.Value />
        <Select.Icon />
      </Select.Trigger>
      <Select.Portal>
        <Select.Positioner
          align="start"
          sideOffset={8}
          alignItemWithTrigger={false}
        >
          <Select.Popup>
            {PRIORITIES.map(({ value, label }) => (
              <Select.Item key={value} value={value}>
                <Select.ItemText>{label}</Select.ItemText>
                <Select.ItemIndicator />
              </Select.Item>
            ))}
          </Select.Popup>
        </Select.Positioner>
      </Select.Portal>
    </Select.Root>
  );
};

I tipi generici della radice rappresentano il valore dell’opzione e se la selezione multipla è abilitata. I valori oggetto supportano itemToStringLabel, itemToStringValue e isItemEqualToValue. Usa null per una selezione singola vuota e un array vuoto per una selezione multipla vuota.

Tastiera

Gli utenti della tastiera possono aprire l’elenco dal trigger, navigare tra le opzioni con i tasti freccia e digitare per trovare un’opzione. Home e Fine passano rispettivamente alla prima e all’ultima opzione. Invio seleziona un’opzione; Esc chiude il popup e ripristina lo stato attivo del trigger. La selezione multipla mantiene aperto il popup mentre le opzioni vengono attivate o disattivate. Etichetta il trigger con Select.Label, un nome accessibile o Field. Un segnaposto da solo non assegna un nome al controllo.

Props

Il riferimento è generato dai tipi dei componenti pubblici. Gli attributi nativi, inclusi i nomi accessibili e i gestori di eventi, sono accettati anche sulle parti che eseguono il rendering degli elementi.

Select.Root

RefObject<SelectRootActions | null>

A ref to imperative actions.

unmount: Ends the closing phase of the select after an externally controlled closing animation finishes. Call preventUnmountOnClose() in onOpenChange first, otherwise the select completes closing on its own. Whether it leaves the DOM is decided by keepMounted on the portal.
close: Closes the select imperatively when called.

string

Provides a hint to the browser for autofill.

ReactNode

Select parts sharing selection, open state and accessible relationships. Root renders no DOM node.

boolean

predefinito:"false"

Whether the select popup is initially open.To render a controlled select popup, use the open prop instead.

SelectInputValue<Value, Multiple> | null

The uncontrolled value of the select when it’s initially rendered.To render a controlled select, use the value prop instead.

boolean

predefinito:"false"

Whether the component should ignore user interaction.

string

Identifies the form that owns the hidden input. Useful when the select is rendered outside the form.

boolean

predefinito:"true"

Whether moving the pointer over items should highlight them. Disabling this prop allows CSS :hover to be differentiated from the :focus (data-highlighted) state.

string

The id of the Select.

Ref<HTMLInputElement>

Ref to the native hidden input used for form submission.

((itemValue: Value, value: Value) => boolean)

Custom comparison logic used to determine if a select item value matches the current selected value. Useful when item values are objects without matching referentially. Defaults to Object.is comparison.

Record<string, ReactNode> | readonly { label: ReactNode; value: any; }[] | readonly Group<any>[]

Data structure of the items rendered in the select popup. When specified, <Select.Value> renders the label of the selected item instead of the raw value.

((itemValue: Value) => string)

When the item values are objects (<Select.Item value={object}>), this function converts the object value to a string representation for display in the trigger. If the shape of the object is { value, label }, the label will be used automatically without needing to specify this prop.

((itemValue: Value) => string)

When the item values are objects (<Select.Item value={object}>), this function converts the object value to a string representation for form submission. If the shape of the object is { value, label }, the value will be used automatically without needing to specify this prop.

Determines if the select enters a modal state when open.

true: user interaction is limited to the select: document page scroll is locked and pointer interactions on outside elements are disabled.
false: user interaction with the rest of the document is allowed.

On touch devices, a true modal blocks outside taps but leaves the page scrollable unless the popup spans nearly the full viewport width, matching native iOS behavior.

boolean

predefinito:"false"

Whether multiple items can be selected.

string

Identifies the field when a form is submitted.

((open: boolean, eventDetails: SelectRootOpenChangeEventDetails) => void)

Receives the requested open state and unchanged Base UI event details.

((open: boolean) => void)

Event handler called after any animations complete when the select popup is opened or closed.

((value: SelectOutputValue<Value, Multiple> | (Multiple extends true ? never : null), eventDetails: SelectRootChangeEventDetails) => void)

Receives the requested generic value and unchanged Base UI event details, including reason, event and cancel(). Multiple selection receives an array; a cleared single value is null.

boolean

Whether the select popup is currently open.

boolean

predefinito:"false"

Whether the user should be unable to choose a different option from the select popup.

boolean

predefinito:"false"

Whether the user must choose a value before submitting a form.

SelectInputValue<Value, Multiple> | null

The value of the select. Use when controlled.

Select.Label

string | ((state: FieldRootState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, FieldRootState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: FieldRootState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.Trigger

ReactNode

Trigger content rendered as supplied. Compose Value and Icon explicitly.

string | ((state: SelectTriggerState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

boolean

Whether the component should ignore user interaction.

boolean

predefinito:"true"

Whether the component renders a native <button> element when replacing it via the render prop. Set to false if the rendered element is not a button (for example, <div>).

Ref<HTMLButtonElement>

Ref to the rendered trigger element, a button by default.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectTriggerState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

"md" | "sm"

predefinito:"md"

Visual size of the trigger. Defaults to md.

CSSProperties | ((state: SelectTriggerState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.Value

ReactNode | ((value: any) => ReactNode)

Accepts a function that returns a ReactNode to format the selected value. Treat the value as read-only: in multiple mode it may be a shared frozen array when nothing is selected.

string | ((state: SelectValueState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

ReactNode

The placeholder value to display when no value is selected. This is overridden by children if specified, or by a null item’s label in items.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectValueState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectValueState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.Icon

ReactNode

predefinito:"<IconChevronDown />"

Trigger icon content. Defaults to the Twenty chevron; explicit children replace it.

string | ((state: SelectIconState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectIconState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectIconState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.Portal

string | ((state: SelectPortalState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

Portal destination. Defaults to the current theme container, then the document body. Explicit null waits for a container before mounting.

Ref<HTMLDivElement>

Ref to the portal div. Native props and render apply to this element.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectPortalState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectPortalState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.Backdrop

string | ((state: SelectBackdropState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectBackdropState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectBackdropState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.Positioner

"center" | "end" | "start"

predefinito:"center"

How to align the popup relative to the specified side.

boolean

predefinito:"true"

Uses the upstream selected-item alignment by default. Set false to use side, align and offsets without overlapping the trigger.

number | OffsetFunction

predefinito:"0"

Additional offset along the alignment axis in pixels. Also accepts a function that returns the offset to read the dimensions of the anchor and positioner elements, along with its side and alignment.The function takes a data object parameter with the following properties:

data.anchor: the dimensions of the anchor element with properties width and height.
data.positioner: the dimensions of the positioner element with properties width and height.
data.side: which side of the anchor element the positioner is aligned against.
data.align: how the positioner is aligned relative to the specified side.

An element to position the popup against. By default, the popup will be positioned against the trigger.

number

predefinito:"5"

Minimum distance to maintain between the arrow and the edges of the popup.Use it to prevent the arrow element from hanging out of the rounded corners of a popup.

string | ((state: SelectPositionerState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

CollisionAvoidance

Determines how to handle collisions when positioning the popup.side controls overflow on the preferred placement axis (top/bottom or left/right):

'flip': keep the requested side when it fits; otherwise try the opposite side (top and bottom, or left and right).
'shift': never change side; keep the requested side and move the popup within the clipping boundary so it stays visible.
'none': do not correct side-axis overflow.

align controls overflow on the alignment axis (start/center/end):

'flip': keep side, but swap start and end when the requested alignment overflows.
'shift': keep side and requested alignment, then nudge the popup along the alignment axis to fit.
'none': do not correct alignment-axis overflow.

fallbackAxisSide controls fallback behavior on the perpendicular axis when the preferred axis cannot fit:

'start': allow perpendicular fallback and try the logical start side first (top before bottom, or left before right in LTR).
'end': allow perpendicular fallback and try the logical end side first (bottom before top, or right before left in LTR).
'none': do not fallback to the perpendicular axis.

When side is 'shift', explicitly setting align only supports 'shift' or 'none'. If align is omitted, it defaults to 'flip'.

Boundary

predefinito:"clipping-ancestors"

An element or a rectangle that delimits the area that the popup is confined to.

Padding

predefinito:"5"

Additional space to maintain from the edge of the collision boundary.

boolean

predefinito:"false"

Whether to disable the popup from tracking any layout shift of its positioning anchor.

"absolute" | "fixed"

predefinito:"absolute"

Determines which CSS position property to use.

Ref<HTMLDivElement>

Ref to the positioning div. Native props, styles and render apply to this element.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectPositionerState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

predefinito:"bottom"

Which side of the anchor element to align the popup against. May automatically change to avoid collisions.

number | OffsetFunction

predefinito:"0"

Distance between the anchor and the popup in pixels. Also accepts a function that returns the distance to read the dimensions of the anchor and positioner elements, along with its side and alignment.The function takes a data object parameter with the following properties:

data.anchor: the dimensions of the anchor element with properties width and height.
data.positioner: the dimensions of the positioner element with properties width and height.
data.side: which side of the anchor element the positioner is aligned against.
data.align: how the positioner is aligned relative to the specified side.

boolean

predefinito:"false"

Whether to maintain the popup in the viewport after the anchor element was scrolled out of view.

CSSProperties | ((state: SelectPositionerState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Popup content rendered as supplied. Compose inside Positioner and choose Portal separately.

CSS class applied to the element, or a function that returns a class based on the component’s state.

Determines the element to focus when the select popup is closed.

false: Do not move focus.
true: Move focus based on the default behavior (trigger or previously focused element).
RefObject: Move focus to the ref element.
function: Called with the interaction type (mouse, touch, pen, or keyboard). Return an element to focus, true to use the default behavior, or false/undefined to do nothing.

Ref to the popup div. Native props, styles and render apply to this element.

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.List

string | ((state: SelectListState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectListState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectListState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.Item

ReactNode

Option content rendered as supplied. Compose ItemText and an optional ItemIndicator explicitly.

string | ((state: SelectItemState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

boolean

predefinito:"false"

Whether the component should ignore user interaction.

string

Specifies the text label to use when the item is matched during keyboard text navigation.Defaults to the item text content if not provided.

boolean

predefinito:"false"

Whether the component renders a native <button> element when replacing it via the render prop. Set to true if the rendered element is a native button.

Ref<HTMLElement>

Ref to the rendered option element. Native props and render apply to this element.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectItemState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectItemState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

any

predefinito:"null"

A unique value that identifies this select item.

Select.ItemIndicator

ReactNode

Selected indicator content. Defaults to the Twenty check icon; explicit children replace it.

string | ((state: SelectItemIndicatorState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

boolean

Whether to keep the HTML element in the DOM when the item is not selected.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectItemIndicatorState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectItemIndicatorState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.ItemText

string | ((state: SelectItemTextState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectItemTextState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectItemTextState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.Arrow

string | ((state: SelectArrowState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectArrowState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectArrowState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.ScrollDownArrow

string | ((state: SelectScrollDownArrowState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

boolean

predefinito:"false"

Whether to keep the HTML element in the DOM while the select popup is not scrollable.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectScrollDownArrowState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectScrollDownArrowState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.ScrollUpArrow

string | ((state: SelectScrollUpArrowState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

boolean

predefinito:"false"

Whether to keep the HTML element in the DOM while the select popup is not scrollable.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectScrollUpArrowState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectScrollUpArrowState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.Group

string | ((state: SelectGroupState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectGroupState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectGroupState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.GroupLabel

string | ((state: SelectGroupLabelState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectGroupLabelState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectGroupLabelState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Select.Separator

string | ((state: SelectSeparatorState) => string | undefined)

CSS class applied to the element, or a function that returns a class based on the component’s state.

"horizontal" | "vertical"

predefinito:"horizontal"

The orientation of the separator.

ReactElement<unknown, string | JSXElementConstructor<any>> | ComponentRenderFn<HTMLProps, SelectSeparatorState>

Allows you to replace the component’s HTML element with a different tag, or compose it with another component.Accepts a ReactElement or a function that returns the element to render.

CSSProperties | ((state: SelectSeparatorState) => CSSProperties | undefined)

Style applied to the element, or a function that returns a style object based on the component’s state.

Sviluppatori

App

API

Auto-ospitazione

Contribuire

Libreria UI

Panoramica

Utilizzo

Stato non controllato

Anatomia

Stato controllato

Selezione multipla

Stato di apertura

Combina con un campo

Composizione degli elementi

Posizionamento

Moduli nativi e dettagli sui callback

Tastiera

Props

Select.Root

Select.Label

Select.Trigger

Select.Value

Select.Icon

Select.Portal

Select.Backdrop

Select.Positioner

Select.List

Select.Item

Select.ItemIndicator

Select.ItemText

Select.Arrow

Select.ScrollDownArrow

Select.ScrollUpArrow

Select.Group

Select.GroupLabel

Select.Separator

​Panoramica

​Utilizzo

​Stato non controllato

​Anatomia

​Stato controllato

​Selezione multipla

​Stato di apertura

​Combina con un campo

​Composizione degli elementi

​Posizionamento

​Moduli nativi e dettagli sui callback

​Tastiera

​Props

​Select.Root

​Select.Label

​Select.Trigger

​Select.Value

​Select.Icon

​Select.Portal

​Select.Backdrop

​Select.Positioner

​Select.Popup

​Select.List

​Select.Item

​Select.ItemIndicator

​Select.ItemText

​Select.Arrow

​Select.ScrollDownArrow

​Select.ScrollUpArrow

​Select.Group

​Select.GroupLabel

​Select.Separator

Panoramica

Utilizzo

Stato non controllato

Anatomia

Stato controllato

Selezione multipla

Stato di apertura

Combina con un campo

Composizione degli elementi

Posizionamento

Moduli nativi e dettagli sui callback

Tastiera

Props

Select.Root

Select.Label

Select.Trigger

Select.Value

Select.Icon

Select.Portal

Select.Backdrop

Select.Positioner

Select.Popup

Select.List

Select.Item

Select.ItemIndicator

Select.ItemText

Select.Arrow

Select.ScrollDownArrow

Select.ScrollUpArrow

Select.Group

Select.GroupLabel

Select.Separator