React Bootstrap 4 Typeahead

Note: This is just the React Bootstrap Typeahead component but modified a little to be compatible with Bootstrap 4

React-based typeahead component that uses Bootstrap as a base for styles and behaviors and supports both single- and multi-selection. The UI and behaviors are inspired by Twitter's typeahead.js. Try a live example.

Please note that this library is under active development and the APIs may change.

Installation

Use NPM to install the module in your project:

npm install --save react-bootstrap-typeahead

Minified and unminified UMD modules are also included in the NPM package, or you can clone the project and npm run build to generate these files.

Usage

The component behaves similar to other form elements. It requires an array of options to be displayed, similar to a select.

var Typeahead = require('react-bootstrap-typeahead');

<Typeahead
  onChange={this._handleChange}
  options={myData}
/>

Single & Multi-Selection

The component provides single-selection by default, but also supports multi-selection. Simply set the multiple prop and the component turns into a tokenizer:

<Typeahead
  multiple
  onChange={this._handleChange}
  options={myData}
/>

Controlled vs. Uncontrolled

Like an input, the component can be controlled or uncontrolled. Use the selected prop to control it via the parent, or defaultSelected to optionally set defaults and then allow the component to control itself.

<Typeahead
  onChange={this._handleChange}
  options={myData}
  selected={selected}
/>

Data

react-bootstrap-typeahead has some expectations about the shape of your data. It expects an array of objects, each of which should have a string property to be used as the label for display. By default, the key is named label, but you can specify a different key via the labelKey prop.

var myData = [
  {id: 1, name: 'John'},
  {id: 2, name: 'Miles'},
  {id: 3, name: 'Charles'},
  {id: 4, name: 'Herbie'},
];

<Typeahead
  labelKey="name"
  onChange={this._handleChange}
  options={myData}
/>

As far as the source of the data, the component simply handles rendering and selection. It is agnostic about the data source (eg: an async endpoint), which should be handled separately.

Rendering

react-bootstrap-typeahead is intended to work with standard Bootstrap components and styles. It provides basic rendering for your data by default, but also allows for more advanced options should the need arise.

renderMenuItemChildren

Allows you to control the contents of a menu item. Your function will be passed the TypeaheadMenu props, an individual option from your data list, and the index:

<Typeahead
  options={options}
  renderMenuItemChildren={(props, option, idx) => {
    /* Render custom contents here */
  }}
/>

Public Methods

To access the component's public methods, add a ref to your typeahead instance:

<Typeahead ref="typeahead" ... />

then access the ref from your handler:

<button onClick={() => this.refs.typeahead.getInstance().clear()}>
  Clear Typeahead
</button>

Note that you must use getInstance to get the typeahead instance. This is because react-bootstrap-typeahead is wrapped by the react-onclickoutside higher-order component, so the clear method is not directly available. See react-onclickoutside's documentation for more information.

blur()

Provides a programmatic way to blur the input.

clear()

Provides a programmatic way to reset the input. Calling the method will clear both text and selection(s).

focus()

Provides a programmatic way to focus the input.

Props

Name | Type | Default | Description -----|------|---------|------------ align | string | 'justify' | Specify menu alignment. The default value is justify, which makes the menu as wide as the input and truncates long values. Specifying left or right will align the menu to that side and the width will be determined by the length of menu item values. allowNew | boolean | false | Allows the creation of new selections on the fly. Note that any new items will be added to the list of selections, but not the list of original options unless handled as such by Typeahead's parent. defaultSelected | array | [] | Specify any pre-selected options. Use only if you want the component to be uncontrolled. disabled | boolean | | Whether to disable the input. Will also disable selections when multiple={true}. emptyLabel | string | 'No matches found.' | Message to display in the menu if there are no valid results. labelKey | string | 'label' | Specify which option key to use for display. By default, the selector will use the label key. maxHeight | number | 300 | Maximum height of the dropdown menu, in px. minLength | number | 0 | Number of input characters that must be entered before showing results. multiple | boolean | false | Whether or not multiple selections are allowed. newSelectionPrefix | string | 'New selection:' | Provides the ability to specify a prefix before the user-entered text to indicate that the selection will be new. No-op unless allowNew={true}. onBlur | function | | Callback fired when the input is blurred. Receives an event. onChange | function | | Callback fired whenever items are added or removed. Receives an array of the selected options. onInputChange | function | | Callback fired when user-input text changes. Receives the text string. options required | array | | Full set of options, including any pre-selected options. paginateResults | number | 100 | For large option sets, initially display a subset of results for improved performance. If users scroll to the end, the last item will be a link to display the next set of results. Value represents the number of results to display. 0 will display all results. paginationText | string | 'Display additional results...' | Prompt displayed when large data sets are paginated. placeholder | string | | Placeholder text for the input. renderMenuItemChildren | function | | Provides a hook for customized rendering of menu item contents. selected | array | [] | The selected option(s) displayed in the input. Use this prop if you want to control the component via its parent.

CSS

The component tries to use as little CSS as possible, relying primarily on Bootstrap or any Bootstrap themes for styling. Some minimal styling is included in Typeahead.css and Token.css and should ideally be included wherever you're using the component.

Example

To modify the example, clone the repository, npm install and npm run example to build the example index file. You can then open the HTML file locally in a browser. You can also try the live example.

Browser Support

Recent versions of the following are supported:

• Chrome
• Firefox
• IE (10/11)
• Safari

License

MIT