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o-toggle CircleCI MIT licensed

This utility component adds toggle (show/hide) behaviour to a <button> or <a> tag and a target.

Quick start

Install the module:

bower install --S o-toggle

Load the JavaScript:

const oToggle = require('o-toggle');


Add some markup:

<button data-o-component="o-toggle" data-o-toggle-target=".my-toggle-target">My button</button>
<div class='my-toggle-target'>Some toggleable content</div>



An o-toggle object must be constructed for every element you have on your page that uses this module. You can do this for explicitly classed elements like so:

const OToggle = require('o-toggle');
const toggleEl = document.querySelector('.o-toggle');
const toggle = new OToggle(toggleEl, {
        target: '.my-target',
        callback: function(state, event) {
            if (state === 'open') {
                console.log('Target opened');
            } else if (state === 'close') {
                console.log('Target closed');

Alternatively, an o.DOMContentLoaded event can be dispatched on the document to auto-construct an o-toggle object for each element with a data-o-component="o-toggle" attribute:

document.addEventListener("DOMContentLoaded", function() {
    document.dispatchEvent(new CustomEvent('o.DOMContentLoaded'));

A second parameter can be passed to the oToggle constructor or to the .init() function with a config object that has the following options:

  • target: HTMLElement or selector of the element that will be toggled
  • callback: Function or content of a function as string that will be executed every time a toggle happens. It has the following parameters:
    • State. 'open' or 'close'
    • Click event object if it comes from the event handler on the toggle


All config options can also be passed as data attributes. These are:

  • data-o-toggle-target: Selector of the element that will be toggled
  • data-o-toggle-callback: Content of a function as string that will be executed every time a toggle happens


If you have any questions or comments about this component, or need help using it, please either raise an issue, visit #ft-origami or email Origami Support.


This software is published by the Financial Times under the MIT licence.