Vue.js 2 Tags Input With Typeahead

Vue.js 2 Tags Input With Typeahead

A tags input component for Vue.js 2 app, with support for typeahead & autocomplete.

Vue Tags Input

npm (scoped) npm MIT

A simple tags input with typeahead built with Vue.js 2.

Live Demo

Installation via NPM

npm i @voerro/vue-tagsinput --save-dev

or

npm i @voerro/vue-tagsinput --save

Then register the component with Vue:

import VoerroTagsInput from '@voerro/vue-tagsinput';

Vue.component('tags-input', VoerroTagsInput);

Include the dist/style.css file on your page to apply the styling. You can use CDN, require() it inside your JS code, or @include it inside your (S)CSS assets. Read the Styling section to learn how to customize the appearance.

Installation via CDN

If you're not using NPM, you can include the required files into your page manually from a CDN. Don't forget to include Vue as well. For example:

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.13/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@voerro/[email protected]/dist/voerro-vue-tagsinput.js"></script>

<script>
    new Vue({
        el: '#app',
        components: { "tags-input": VoerroTagsInput },
    });
</script>

Include the CSS file on your page to apply the styling. Read the Styling section to learn how to customize the appearance.

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@voerro/[email protected]/dist/style.css">

IMPORTANT: Always grab the latest versions of the package from JSDELIVR, the ones provided in the examples above might be outdated. Same goes for Vue.js.

Usage

<tags-input element-id="tags"
    v-model="selectedTags"
    :existing-tags="{ 
        'web-development': 'Web Development',
        'php': 'PHP',
        'javascript': 'JavaScript',
    }"
    :typeahead="true"></tags-input>
<tags-input element-id="tags"
    v-model="selectedTags"
    :existing-tags="{ 
        1: 'Web Development',
        2: 'PHP',
        3: 'JavaScript',
    }"
    :typeahead="true"></tags-input>

element-id will be applied to id and name attributes of the hidden input that contains the list of the selected tags as its value. Optionally you can also use the v-model directive to bind a variable to the array of selected tags.

existing-tags is the list of the existing on your website tags. Include it even if you're not using typeahead.

Remove the typeahead property to disable this functionality.

Setting Selected Tags Programmatically

If you need to programmatically (manually) set or change the list of selected tags from "outside" - just set the required value to the variable bound with the component via v-model.

Acceptable values:

  • an array of tag slugs or tag strings
  • a string with tags separated via comma)

For example, the variable name is selectedTags:

<tags-input element-id="tags" 
    v-model="selectedTags"></tags-input>

You can pre-set the value of this variable:

new Vue({
    el: '#app',

    components: { VoerroTagsInput },

    data: {
        selectedTags: [
            'tags',
            'selected',
            'by',
            'default',
        ],
        // ALTERNATIVELY
        selectedTags: 'tags,selected,by,default',
    }
});

... or change it whenever you need to:

new Vue({
    el: '#app',

    components: { VoerroTagsInput },

    data: {
        selectedTags: [],
    },

    methods: {
        setSelectedTags() {
            this.selectedTags = ['programmatically', 'selected', 'tags'];
            // ALTERNATIVELY
            this.selectedTags = 'programmatically,selected,tags';
        }
    }
});

All Available Props

Prop Type Default Description
elementId String - id & name for the hidden input.
existingTags Object {} An object with existing tags where keys are tag slugs or ids and values are strings to be displayed.
typeahead Boolean false Whether the typeahead (autocomplete) functionality should be enabled.
typeahead-style String 'badges' The autocomplete prompt style. Possible values: badges, dropdown.
typeahead-max-results Number 0 Maximum number of typeahead results to be shown. 0 - unlimited.
typeahead-activation-threshold Number 1 Show typeahead results only after at least this many characters were entered. When set to 0, typeahead with all the available tags will be displayed on input focus.
placeholder String 'Add a tag' The placeholder of the tag input.
limit Number 0 Limit the number of tags that can be chosen. 0 = no limit.
only-existing-tags Boolean false Only existing tags can be added/chosen. New tags won't be created.
delete-on-backspace Boolean true Whether deleting tags by pressing Backspace is allowed.
allow-duplicates Boolean false Allow users to add the same tags multiple times.
validate Function text => true Callback to validate tags' text with.
add-tags-on-comma Boolean false Add new tags when comma is pressed.

Events

Event Description
@initialized Fired when the component is completely ready to be worked with. Fired from the Vue.js' mounted() method.
@tag-added Fired when a new tag is added. The slug of the tag is passed along.
@tag-removed Fired when a tag is removed. The slug of the tag is passed along.
@tags-updated Fired when a tag is added or removed.
<voerro-tags-input
    ...
    @initialized="onInitialized"
    @tag-added="onTagAdded"
    @tag-removed="onTagRemoved"
    @tags-updated="onTagsUpdated"
></voerro-tags-input>
<script>
new Vue({
    ...

    methods: {
        onInitialized() {
            console.log('Initialized');
        },

        onTagAdded(slug) {
            console.log(`Tag added: ${slug}`);
        },

        onTagRemoved(slug) {
            console.log(`Tag removed: ${slug}`);
        },

        onTagsUpdated() {
            console.log('Tags updated');
        },
    }
});
</script>

Data

The list of selected tags is stored as a string (tags separated with a comma) inside a hidden input with id and name set to the value from the element-id props (but only if you've provided this prop).

You can also bind the array of selected tags to a variable via v-model.

If a tag is listed in existing-tags, the tag's slug will be used, otherwise the text entered by user is added.

Example value of the hidden input:

web-development,javascript,This is a new tag,php

Styling

If you want to completely re-style the component - write your own styles from scratch using dist/style.css as a reference. Alternatively you can override specific parts of dist/style.css using !important.

Certain classes/styles can be overridden via component props on a per instance basis in case you just want to make minor changes, e.g. you just want to change colors.

Prop Default class Area
wrapper-class tags-input-wrapper-default Outer appearance of the input - a wrapper providing a border and padding around the selected tags. If you're using CSS frameworks, you could use the frameworks' native classes, e.g. form-control for Bootstrap or input for Bulma.

Using Typeahead (Autocomplete)

When search results are displayed underneath the input, use the arrow down and arrow up keys on the keyboard to move the selection. Press Enter to select a tag. Press Esc to discard the search results and then Enter to add a new tag the way you've typed it.

Updating From Older Versions

Older versions up to v1.4.0 -> v1.5.0

The oldTags property was removed. See the Setting Selected Tags Programmatically section on how to (pre)set the list of existing tags.

v1.5.0 -> v1.5.1

TagsInput was renamed to VoerroTagsInput to eliminate possible name conflicts with other packages.

Support

This software is absolutely free to use and is developed in the author's free time. If you found this software useful and would like to say thank you to the author, please consider making a donation. It's not the amount, it's the gesture.

  • BTC (Bitcoin): 34ReKHWmSoGbcEHJw3HtyZ5CXz1UfoUKG5
  • PayPal: https://paypal.me/AlexanderZavyalov

Github Repository

Tags: #VueJs