Selection Area

Simple JavaScript mouse & touch seletion area to any DOM container element.

How to use | API Reference | Demo

How to use

Download

Install with npm

npm install selection-area

Install with yarn

yarn add selection-area

From Source Code

Clone or download zipped source code into node_modules project folder.

git clone https://github.com/lucasmenendez/selection-area.git <project>/node_modules/selection-area

Import

Local dist version

Import using script html tags with vendor path:

<script src="/node_modules/selection-area/dist/selection-area.js"></script>

Or import using ES6 import:

import { SelectionArea } from 'selection-area';

CDN version

Importing with unpkg.com:

<script src="https://unpkg.com/selection-area"></script>

Example

Define container for selection area and selectable childs.

<div class="parent">
    <div class="child">0</div>
    <div class="child">1</div>
    <div class="child">2</div>
    <div class="child">3</div>
    <div class="child">4</div>
    <div class="child">5</div>
    <div class="child">6</div>
    <div class="child">7</div>
    <div class="child">8</div>
    <div class="child">9</div>
</div>

Define SelectionArea behaviour with configuration object, check available parameters here.

let config = {
    container: document.querySelector('.parent'),
    area: {
        class: 'custom-area'
    },
    targets: '.child',
    touchable: true,
    autostart: true,
    callback: selection => {
        if (selection.length == 0) alert("empty selection");
        else alert(`${ selection.length } items selected`);
    }
}

let selectable = new SelectionArea(config);

Also you can stylize the selection area element adding style yo defined class.

.custom-area {
    background: rgba(52, 152, 219, 0.2);
    border: 2px dotted #2980b9;
}