flotsam-autocomplete

Flotsam autocomplete

/ˈflätsəm/

hi

noun

• the wreckage of a ship or its cargo found floating on or washed up by the sea.
• people or things that have been rejected and are regarded as worthless.
• A killer autocomplete libairy

---

Mission Statement

After looking over the choices for autocomplete libs on npm i felt the choices for typeahead/autocomplete UI's there wasnt one simple enough with clear documentation, a modern event bus system, flexable with styles, that doesnt use jquery (im taking about you typeahead.js), with a small footprint (2kb), and still in active development. This should be able to handle solutions that need flexable ajax or static data with acessiable key controls. I kept key interactions as similar as google's typeahead as posisble.

While this libary is every thing I need usually, it might not be everything you need. If you need image rendering, custom html injections in the list, need sub sections, subtitles ect, this isnt it. Checkout @algolia/autocomplete-js This beast will do it all.

Why flotsom?

Have you every tried to search "autocomplete" on github or npm. Its the wild west out there

On to the docs!

---

Using Flotsam

To initialize flotsam in a project import it in the desired file!

import flotsam from 'flotsam-autocomplete'

and initailize it on the page with

const typeahead = new flotsam({
    el: document.querySelector('input'),
    data: [!!data here!!]
})

Now, when interacting with the input flotsom will render a absolutely positioned box under the input for best results set the parent element to relaitive position so flotsom knows where to go!

The rendered html should look a lil' something like this

<div class="autocomplete-modal">
    <div class="autocomplete-modal__inner">
        <ul class="autocomplete-modal__list" role="combobox">
            <li role="option">Rendered value 1</li>
            <li role="option">Rendered value 2</li>
            <li role="option">Rendered value 3</li>
            ... ect
        </ul>
    </div>
</div>

There are no opinionaed styles on flotsom, thats up to you!

Options

// a complex instance of floatsam
const typeahead = new floatsam({
    // input element oyu want to attach to
    el: document.querySelector('input'),

    // static data formatted in an array, this is the data that will render on interaction
    data: ['lorem ipsum', 'lipsum', 'hello world', 'foo', 'bar', 'foo bar'],

    // the ajax implimentation -
    // this allows oyu flexablity to pass your own promise to the render function
    // textValue is the inputed value :)
    onAjax: (textValue) => {
        return axios
            .get(`https://dummyjson.com/users/${textValue}`)
            .then((d) => {
                // after we get data we format it into an array and pass it back to flotsom THANKS!
                const users = d.data.users
                return users.map((user) => {
                    return user.firstName
                })
            })
    }

    // this sets the minimum count of input characters before we will render the box
    minChars: 2,

    // this is an interaction that google does that i thought i should include:
    // when key-ing up or down, the input will fill with the previewed word
    inputPreview: true,

})

Events!

Flotsome comes with an event bus to trigger your own crazy ideas! When you have access to the const typeahead variable you can listen to events with it

typeahead.on('init', (instanceData) => {
    console.log('modal init!')
})

typeahead.on('openModal', (instanceData) => {
    console.log('modal opened')
})

typeahead.on('closeModal', (instanceData) => {
    console.log('modal closed')
})

typeahead.on('selectKey', (instanceData) => {
    console.log('modal item keyed')
})

typeahead.on('disabled', (instanceData) => {
    console.log('modal item keyed')
})

InstanceData has access to the current, modal, input, options (readonly), and any other useful information i could think of!

Triggering methods!

Flotsom also has some manual controls if you need them

// force close the flotsom
typeahead.triggerClose()

// disables flotsom
typeahead.Triggerdisable()

// trigger event wish list
// disable, destory

Keybaord controls

So these are the most important part i think! Flotsom hijacks several key and functions while opened, to provide a holistic feature set much like the google autocomplete UI.

• Arrow Up and Arrow Down keys allow you to select previous and next items while open
• Tab will set the value, close the modal, but NOT submit (like google)
• Escape will set the value, close the modal, but NOT submit (like google)
• Enter will set the value, close the modal AND submit (like google)

---

Accessibility

SO one of the main features of this libairy will be the porting of all the good work done at on https://github.com/alphagov/accessible-autocomplete to be ported from their react libairy to something we can use in vanilla js. I would way im about 80% there, outstanding are the alerts and assisitve text. But the end result will be to have 100% a11y parity with https://github.com/alphagov/accessible-autocomplete :)

Any aay features beyond that, id be happy to include, leave an issue and some reasoning behind it.

---

API

If above was a bit too conversational for you, here are tables of the above information! (TODO!)

options

Events

Triggers

---

Roadmap

I'm not done with this project! While the goal is to keep it lean i keep having shower ideas. Heres what's in for sure:

• 100% a11y parity with https://github.com/alphagov/accessible-autocomplete
• Custom empty state option
• Assistive text for screen readers (using aira-describeby)
• Optional Empty state modal
• Outside click close (with option to disable that)

Nice to haves

• Custom filterBy and sortBy functions before we generate autocomplete list items
• Custom regex for the text highlight on autocomplete (make you do all the work!)
• Allow for custom html to be put in the dropdown (this would make some current features a bit more annoying - more docs ect)