danandrei/tagify

lightweight efficient Tags input component

Tagify - lightweight input "tags" script

Want to simply convert an input field into a tags element, in a easy customizable way, with good performance and smallest code footprint? You are in the right place my friend.

Demo page

Selling points

• supports whitelist (with native suggestions dropdown as-you-type)
• supports blacklists
• JS file is under 150 very readiable lines of code
• JS weights less than ~5kb
• SCSS file is ~2kb of highly readable and flexible code
• No other inputs are used beside the original, and its value is kept in sync
• Can paste in multiple values ("tag 1, tag 2, tag 3")
• Automatically disallow duplicate tags (vis "settings" object)
• Tags can be created by commas or by pressing the "Enter" key
• Tags can be trimmed via hellip by giving max-width to the tag element in your CSS
• Easily customized
• Exposed custom events

building the project

Simply run gulp in your terminal, from the project's path (Gulp should be installed first)

Basic usage

Lets say this is your markup, and you already have a value set on the input (which was pre-filled by data from the server):

<input name='tags' placeholder='write some tags' value='foo, bar,buzz'>
<textarea name='tags' placeholder='write some tags'>foo, bar,buzz</textarea>

what you need to do to convert that nice input into "tags" is simply select your input/textarea and run tagify():

// vanilla component
var input = document.querySelector('input[name=tags]'),
    tagify = new Tagify( input );

// with settings passed
tagify = new Tagify( input, {
    duplicates: true,
    whitelist: ['foo', 'bar']},
    callbacks: {
        add : onAddTag // calls an imaginary "onAddTag" function when a tag is added
    }
);

// when using jQuery plugin version file `jQuery.tagify.js`
$('[name=tags]').tagify()

// listen to custom tags' events such as 'add' or 'remove'
tagify1.on('remove', ()=>{
    console.log(e, e.detail);
});

Now markup be like:

<tags>
    <tag>
        <x></x>
        <div><span title="css">css</span></div>
    </tag>
    <tag>
        <x></x>
        <div><span title="html">html</span></div>
    </tag>
    <tag>
        <x></x>
        <div><span title="javascript">javascript</span></div>
    </tag>
    <div>
        <input list="tagsSuggestions3l9nbieyr" class="input placeholder">
        <datalist id="tagsSuggestions3l9nbieyr">
            <label> select from the list:
                <select>
                    <option value=""></option>
                    <option>foo</option>
                    <option>bar</option>
                </select>
            </label>
        </datalist><span>write some tags</span>
    </div>
    <input name="tags" placeholder="write some tags" value="foo, bar,buzz">
</tags>

Methods

Name	Info
destroy	if called, will revert the input back as it was before Tagify was applied

Exposed events

Name	Info
add	A tag has been added
remove	A tag has been removed
duplicate	A tag has been added and found to be a duplicate of existing one
maxTagsExceed	Number of tags exceeds the allowed quantity and the exceed tags were denied (removed)
blacklisted	A tag which is in the blacklist has been added and denied (removed)
notWhitelisted	A tag which is not in the whitelist has been added and denied (removed)

Settings

Name	Type	Default	Info
duplicates	Boolean	false	(flag) should duplicate tags be allowed or not
enforeWhitelist	Boolean	false	should ONLY use tags allowed in whitelist
autocomplete	Boolean	true	show native suggeestions list, as you type
whitelist	Array	[]	an array of tags which only they are allowed
blacklist	Array	[]	an array of tags which aren't allowed
callbacks	Object	{}	exposed callbacks object to be triggered on events: 'add' / 'remove' tags
maxTags	Number	Infinity	max number of tags
suggestionsMinChars	Number	2	minimum characters to input which shows the sugegstions list