@x-govuk/govuk-prototype-components/src/x-govuk/components/autocomplete/autocomplete.js

Common and experimental components that are not yet part of the GOV.UK Design System

import accessibleAutocomplete from 'accessible-autocomplete'

/**
 * @param {HTMLElement} $module - Module
 */
export default function ($module) {
  this.init = () => {
    if (!$module) {
      return
    }

    // Autocomplete options get passed from Nunjucks params to data attributes
    const params = $module.dataset

    accessibleAutocomplete.enhanceSelectElement({
      selectElement: $module,
      defaultValue: $module.value,
      autoselect: params.autoselect === 'true',
      displayMenu: params.displayMenu,
      minLength: params.minLength ? parseInt(params.minLength) : 0,
      showAllValues: params.showAllValues === 'true',
      showNoOptionsFound: params.showNoOptionsFound === 'true'
    })
  }
}