Select

A versatile dropdown select component with support for option groups, validation, and multiple selection. Perfect for forms, filters, and data selection. Built for Pulse Framework with full reactivity support.

Import

tsx

import { Select, Pulse } from '@odyssee-software/components';

Basic Usage

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With Label and Hint

Add labels and helper text for better UX.

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Sizes

Five size options control padding and text size: xs, sm, md, lg, and xl.

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Required Field

Mark fields as required with visual indicators.

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With Error

Display validation errors.

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With Option Groups

Organize options into labeled groups.

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Disabled Options

Disable specific options.

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Disabled State

Disable the entire select.

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Multiple Selection

Allow selecting multiple options.

tsx

const multiSelect = (
  <Select
    label="Tags"
    multiple={true}
    placeholder="Select tags"
    options={[
      { value: 'javascript', label: 'JavaScript' },
      { value: 'typescript', label: 'TypeScript' },
      { value: 'react', label: 'React' },
      { value: 'vue', label: 'Vue' },
      { value: 'angular', label: 'Angular' }
    ]}
  />
);

Reactive Value

Control select value with Pulse signals.

tsx

const country = Pulse.signal('us');

const reactiveSelect = (
  <div>
    <Select
      label="Country"
      value={country}
      options={[
        { value: 'us', label: 'United States' },
        { value: 'uk', label: 'United Kingdom' },
        { value: 'fr', label: 'France' },
        { value: 'de', label: 'Germany' }
      ]}
      onChange={(val) => country(val)}
    />
    
    <div class="mt-4">
      <p class="text-sm text-gray-600">Selected: {country()}</p>
    </div>
  </div>
);

Dependent Selects

Create cascading select dropdowns.

tsx

const DependentSelects = () => {
  const country = Pulse.signal('');
  const city = Pulse.signal('');

  const cities = Pulse.computed(() => {
    const countryVal = country();
    if (countryVal === 'us') {
      return [
        { value: 'nyc', label: 'New York' },
        { value: 'la', label: 'Los Angeles' },
        { value: 'chicago', label: 'Chicago' }
      ];
    } else if (countryVal === 'uk') {
      return [
        { value: 'london', label: 'London' },
        { value: 'manchester', label: 'Manchester' },
        { value: 'birmingham', label: 'Birmingham' }
      ];
    }
    return [];
  });

  return (
    <div class="space-y-4">
      <Select
        label="Country"
        value={country}
        options={[
          { value: 'us', label: 'United States' },
          { value: 'uk', label: 'United Kingdom' }
        ]}
        onChange={(val) => {
          country(val);
          city(''); // Reset city when country changes
        }}
      />

      <Select
        label="City"
        value={city}
        options={cities()}
        disabled={!country()}
        onChange={(val) => city(val)}
      />
    </div>
  );
};

Form Validation

Integrate with form validation.

tsx

const RegistrationForm = () => {
  const role = Pulse.signal('');
  const error = Pulse.signal('');

  const validate = () => {
    if (!role()) {
      error('Please select a role');
      return false;
    }
    error('');
    return true;
  };

  const handleSubmit = (e: Event) => {
    e.preventDefault();
    if (validate()) {
      console.log('Form submitted with role:', role());
    }
  };

  return (
    <form onsubmit={handleSubmit} class="space-y-4">
      <Select
        label="Role"
        value={role}
        onChange={(val) => {
          role(val);
          validate();
        }}
        error={error()}
        placeholder="Select your role"
        required
        options={[
          { value: 'developer', label: 'Developer' },
          { value: 'designer', label: 'Designer' },
          { value: 'manager', label: 'Manager' },
          { value: 'other', label: 'Other' }
        ]}
      />
      <Button type="submit">Register</Button>
    </form>
  );
};

Props

Prop	Type	Default	Description
`value`	`string \| string[] \| Signal<string \| string[]>`	-	Selected value(s)
`options`	`SelectOption[]`	Required	Array of options
`placeholder`	`string`	`"Select an option"`	Placeholder text
`label`	`string`	-	Label text
`hint`	`string`	-	Helper text below select
`error`	`string`	-	Error message
`size`	`"xs" \| "sm" \| "md" \| "lg" \| "xl"`	`"md"`	Select size
`multiple`	`boolean`	`false`	Enable multiple selection
`disabled`	`boolean`	`false`	Disable select
`required`	`boolean`	`false`	Mark as required
`onChange`	`(value: string \| string[]) => void`	-	Change event handler
`className`	`string`	-	Additional CSS classes
`id`	`string`	Auto-generated	HTML id attribute

SelectOption Type

tsx

interface SelectOption {
  value: string | number;
  label: string;
  group?: string;
  disabled?: boolean;
}

Accessibility

The Select component follows accessibility best practices:

✅ Proper label association with for attribute
✅ ARIA attributes for errors and descriptions
✅ Required field indicators
✅ Keyboard navigation support
✅ Focus management
✅ Screen reader friendly error messages
✅ Option groups with proper semantics

ARIA Attributes

tsx

const accessibleSelect = (
  <Select
    label="Country"
    aria-label="Select country"
    aria-describedby="country-hint"
    aria-invalid={hasError}
    options={countries}
  />
);

Best Practices

✅ Do

Provide clear labels and hints
Group related options
Show validation errors clearly
Use appropriate placeholder text
Disable options when needed
Handle loading states
Validate on change for better UX

tsx

// Good: Clear labels and validation
const goodSelect = (
  <Select
    label="Subscription Plan"
    hint="You can change your plan anytime"
    placeholder="Choose a plan"
    required
    options={planOptions}
  />
);

❌ Don't

Don't use select for very long lists (use search/autocomplete)
Don't forget to handle empty states
Don't use vague placeholders like "Select"
Don't hide critical options in groups
Don't forget to reset dependent selects

tsx

// Bad: Too many ungrouped options
const badSelect = (
  <Select
    placeholder="Select"
    options={[...100 countries]}
  />
);

// Better: Use groups or autocomplete
const betterSelect = (
  <Select
    label="Country"
    placeholder="Select your country"
    options={[
      { value: 'us', label: 'United States', group: 'North America' },
      { value: 'ca', label: 'Canada', group: 'North America' },
      // Grouped by region...
    ]}
  />
);

Use Cases

tsx

const FilterSelect = () => (
  <Select
    label="Filter by Status"
    placeholder="All statuses"
    options={[
      { value: 'all', label: 'All' },
      { value: 'active', label: 'Active' },
      { value: 'inactive', label: 'Inactive' },
      { value: 'pending', label: 'Pending' }
    ]}
  />
);

Language Selector

tsx

const LanguageSelector = () => (
  <Select
    label="Language"
    options={[
      { value: 'en', label: '🇺🇸 English' },
      { value: 'es', label: '🇪🇸 Español' },
      { value: 'fr', label: '🇫🇷 Français' },
      { value: 'de', label: '🇩🇪 Deutsch' }
    ]}
  />
);

Priority Selector

tsx

const PrioritySelect = () => (
  <Select
    label="Priority"
    options={[
      { value: 'low', label: '🟢 Low' },
      { value: 'medium', label: '🟡 Medium' },
      { value: 'high', label: '🔴 High' }
    ]}
  />
);

Styling & Theming

All select styles use Tailwind CSS classes and support dark mode automatically.

Custom Styling

tsx

const customSelect = (
  <Select
    className="font-semibold"
    options={options}
  />
);

TypeScript

Full TypeScript support with complete type definitions:

tsx

import type { SelectProps, SelectOption } from '@odyssee-software/components';

const options: SelectOption[] = [
  { value: 'opt1', label: 'Option 1' },
  { value: 'opt2', label: 'Option 2' }
];

const props: SelectProps = {
  label: 'Select',
  options: options,
  onChange: (value: string | string[]) => {
    console.log('Selected:', value);
  }
};

const select = <Select {...props} />;

Input - For text input
Textarea - For multiline input
Checkbox - For multiple selections
Radio - For single selections

Version: 1.0.0
Last Updated: January 2025

Select ​

Import ​

Basic Usage ​

With Label and Hint ​

Sizes ​

Required Field ​

With Error ​

With Option Groups ​

Disabled Options ​

Disabled State ​

Multiple Selection ​

Reactive Value ​

Dependent Selects ​

Form Validation ​

Props ​

SelectOption Type ​

Accessibility ​

ARIA Attributes ​

Best Practices ​

✅ Do ​

❌ Don't ​

Use Cases ​

Filter Dropdown ​

Language Selector ​

Priority Selector ​

Styling & Theming ​

Custom Styling ​

TypeScript ​

Related Components ​

Select

Import

Basic Usage

With Label and Hint

Sizes

Required Field

With Error

With Option Groups

Disabled Options

Disabled State

Multiple Selection

Reactive Value

Dependent Selects

Form Validation

Props

SelectOption Type

Accessibility

ARIA Attributes

Best Practices

✅ Do

❌ Don't

Use Cases

Filter Dropdown

Language Selector

Priority Selector

Styling & Theming

Custom Styling

TypeScript

Related Components