react-tag-autocomplete

React Tag Autocomplete

React Tag Autocomplete is a simple tagging component ready to drop in your React projects. Originally based on the React Tags project by Prakhar Srivastav this version removes the drag-and-drop re-ordering functionality, adds appropriate roles and ARIA states and introduces a resizing text input. View demo.

Please note, this version is in beta, you can check out the latest stable version here 📢

Installation

This is a Node.js module available through the npm registry. Before installing, download and install Node.js.

Installation is done using the npm install command:

npm install --save react-tag-autocomplete@pre-release

Usage

Here's a sample implementation that initializes the component with a list of preselected tags and a suggestions list. For further customization details, see options.

import React from 'react'
import ReactDOM from 'react-dom'
import ReactTags from 'react-tag-autocomplete'

class App extends React.Component {
  constructor (props) {
    super(props)

    this.state = {
      tags: [
        { id: 1, name: "Apples" },
        { id: 2, name: "Pears" }
      ],
      suggestions: [
        { id: 3, name: "Bananas" },
        { id: 4, name: "Mangos" },
        { id: 5, name: "Lemons" },
        { id: 6, name: "Apricots" }
      ]
    }
  }

  onDelete (i) {
    const tags = this.state.tags.slice(0)
    tags.splice(i, 1)
    this.setState({ tags })
  }

  onAddition (tag) {
    const tags = [].concat(this.state.tags, tag)
    this.setState({ tags })
  }

  render () {
    return (
      <ReactTags
        tags={this.state.tags}
        suggestions={this.state.suggestions}
        onDelete={this.onDelete.bind(this)}
        onAddition={this.onAddition.bind(this)} />
    )
  }
}

ReactDOM.render(<App />, document.getElementById('app'))

Options

• id
• tags
• suggestions
• suggestionsFilter
• placeholderText
• removeButtonText
• noSuggestionsText
• autoresize
• delimiters
• minQueryLength
• maxSuggestionsLength
• classNames
• onAddition
• onDelete
• onInput
• onFocus
• onBlur
• onValidate
• addOnBlur
• allowNew
• allowBackspace
• tagComponent
• inputAttributes

id (optional)

The ID attribute given to the listbox element. Default: ReactTags.

tags (optional)

An array of selected tags. Each tag is an object which must have an id and a name property. Defaults to [].

const tags =  [
  { id: 1, name: 'Apples' },
  { id: 2, name: 'Pears' }
]

suggestions (optional)

An array of tag suggestions. Each suggestion is an object which must have an id and a name property and an optional disabled property to make the suggestion non-selectable. Defaults to [].

const suggestions = [
  { id: 3, name: 'Bananas' },
  { id: 4, name: 'Mangos' },
  { id: 5, name: 'Lemons' },
  { id: 6, name: 'Apricots', disabled: true }
]

suggestionsFilter (optional)

A callback function to filter suggestion items with. The callback receives two arguments; a suggestion and the current query and must return a boolean value.

If no function is supplied the default filter is applied. Defaults to null.

placeholderText (optional)

The placeholder string shown for the input. Defaults to 'Add new tag'.

removeButtonText (optional)

The title text to add to the remove selected tag button. Default 'Click to remove tag'.

noSuggestionsText (optional)

Message shown if there are no matching suggestions. Defaults to null.

autoresize (optional)

Boolean parameter to control whether the text-input should be automatically resized to fit its value. Defaults to true.

delimiters (optional)

Array of keys matching KeyboardEvent.key values. When a corresponding key is pressed it will trigger tag selection or creation. Defaults to ['Enter', 'Tab'].

minQueryLength (optional)

Minimum query length required to show the suggestions list. Defaults to 2.

maxSuggestionsLength (optional)

Maximum number of suggestions to display. Defaults to 6.

classNames (optional)

Override the default class names used by the component. Defaults to:

{
  root: 'react-tags',
  rootFocused: 'is-focused',
  selected: 'react-tags__selected',
  selectedTag: 'react-tags__selected-tag',
  selectedTagName: 'react-tags__selected-tag-name',
  search: 'react-tags__search',
  searchWrapper: 'react-tags__search-wrapper',
  searchInput: 'react-tags__search-input',
  suggestions: 'react-tags__suggestions',
  suggestionActive: 'is-active',
  suggestionDisabled: 'is-disabled'
}

onAddition (required)

Function called when the user wants to add a tag. Receives the tag.

function onAddition(tag) {
  const tags = [...this.state.tags, tag]
  this.setState({ tags })
}

onDelete (required)

Function called when the user wants to delete a tag. Receives the tag index.

function onDelete(i) {
  const tags = this.state.tags.slice(0)
  tags.splice(i, 1)
  this.setState({ tags })
}

onInput (optional)

Optional event handler when the input value changes. Receives the current query.

function onInput(query) {
  if (!this.state.busy) {
    this.setState({ busy: true })

    return fetch(`query=${query}`).then((result) => {
      this.setState({ busy: false })
    })
  }
}

onFocus (optional)

Optional callback function for when the input receives focus. Receives no arguments.

onBlur (optional)

Optional callback function for when focus on the input is lost. Receives no arguments.

onValidate (optional)

Optional validation function that determines if tag should be added. Receives the tag object and must return a boolean.

function onValidate(tag) {
  return tag.name.length >= 5;
}

addOnBlur (optional)

Creates a tag from the current input value when focus on the input is lost. Defaults to false.

allowNew (optional)

Enable users to add new (not suggested) tags. Defaults to false.

allowBackspace (optional)

Enable users to delete selected tags when backspace is pressed while focussed on the text input when empty. Defaults to true.

tagComponent (optional)

Provide a custom tag component to render. Defaults to null.

suggestionComponent (optional)

Provide a custom suggestion component to render. Default: null.

inputAttributes (optional)

An object containing additional attributes that will be applied to the text input. Please note that this prop cannot overwrite existing attributes, it can only add new ones. Defaults to {}.

API

addTag(tag)

deleteTag(index)

clearInput()

Styling

It is possible to customize the appearance of the component, the included styles found in /example/styles.css are only an example.

Development

The component is written in ES6 and uses Rollup as its build tool. Tests are written with Jasmine using JSDOM.

npm install
npm run dev # will open http://localhost:8080 and watch files for changes

Upgrading

To see all changes refer to the changelog.

Upgrading from 5.x to 6.x

• React 16.5 or above is now required.
• Event handlers and callbacks have been renamed to use on prefixes, e.g. the handleAddition() callback should now be called onAddition().
• The delimiters option is now an array of KeyboardEvent.key values and not KeyboardEvent.keyCode codes, e.g. [13, 9] should now be written as ['Enter', 'Tab']. See https://keycode.info/ for more information.
• The placeholder option has been renamed placeholderText
• The delimiterChars option has been removed, use the delimiters option instead.
• The clearInputOnDelete option has been removed and is now the default behaviour
• The autofocus option has been removed.