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# Selection Modes

The `mode` prop determines the selection mode.
DayPicker offers predefined rules for date selection.

- [Single mode](./single-mode.mdx): Allows the selection of a single date.
- [Multiple mode](./multiple-mode.mdx): Allows the selection of multiple individual dates.
- [Range mode](./range-mode.mdx): Allows the selection of a continuous range of dates.

| Prop Name  | Type                                                                                 | Description                             |
| ---------- | ------------------------------------------------------------------------------------ | --------------------------------------- |
| `mode`     | `"single"` \| `"multiple"` \| `"range"`                                              | Enter a selection mode.                 |
| `disabled` | [`Matcher`](../api/type-aliases/Matcher.md) \| `Matcher[]`                           | Disabled dates that cannot be selected. |
| `selected` | `Date` \| `Date[]` \| [`DateRange`](../api/type-aliases/DateRange.md) \| `undefined` | The selected date(s).                   |
| `required` | `boolean`                                                                            | When `true`, the selection is required. |
| `onSelect` | [`OnSelectHandler`](../api/type-aliases/OnSelectHandler.md)                          | Event callback when a date is selected. |

## Customizing Selections

To customize the behavior of a selection mode, use the `selected` and `onSelect` props to handle the selection event and update the selected dates according to your application's requirements:

```tsx
import { useState } from "react";

import { DayPicker } from "react-day-picker";

export function App() {
  const [selected, setSelected] = useState<Date[] | undefined>();
  const handleSelect = (newSelected) => {
    // Update the selected dates
    setSelected(newSelected);
  };
  return (
    <DayPicker mode="multiple" selected={selected} onSelect={handleSelect} />
  );
}
```

You can also set the selection mode to `default` and implement your own mode using `modifiers` and `onDayClick`. For more information, read the [Custom Selections](../guides/custom-selections.mdx) guide.