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@spark-engine/toggler

v1.6.7

Published

Easily toggle elements visibility or classnames from click or change events

Downloads

3

Readme

Spark Toggler

Build Status

This is a nice little tool for toggling classnames and visibility on elements in response to clicks or form element changes. You can do things like:

  • Click a link or button to toggle another element's visibility.
  • Link visibility of an element to the state of a checkbox.
  • Use radio buttons or select inputs to exclusively show or hide other elments (acting like tabs).
  • Do any of the above but change classnames on other elements.

Note: be sure your stylesheets have styles for the hidden classname.

Usage

Toggling elements will have a data-toggle, data-hide, or data-show property whose value contains one or more CSS selectors.

  • data-toggle: alternately changes visibility by adding or removing a hidden or visible classname.
  • data-show: add a visible classname, remove a hidden classname.
  • data-hide: add a hidden classname, remove a visible classname.

When you click an toggling element, it will change the visibility elements matching the CSS selectors. For example:

<a href="#" data-toggle='.menu'>Menu</a>

Clicking this element will add or remove the class names hidden or visible on all elements matching the .menu selector. You can use multiple selectors too like this.

<a href="#" data-toggle='.surprise-party, #cake, .banners, .balloons'>Open Door</a>

Inputs: Checkbox, Radio Button, Select Option

If a toggling element is a checkbox, radio button or a select option toggling works in sync with the state of that input.

With a checkbox, using data-show will show an element when checked and hide it when unchecked. Using data-hide will invert the toggle; hiding the element when checked and showing it when unchekced.

  <input type='checkbox' data-show='.expanded-options' id='#optional'><label for='#optional'>Show options</label>
  <div class='expanded-options'>…</div>

With Radio inputs and selects, the target element for the selected option will be shown and elements targetd by all other options will be hidden. For this reason, only use data-show with radio inputs and selects. The hide system is implicit.

<select>
  <option data-show='.cats'>Cats</option>
  <option data-show='.dogs'>Dogs</option>
  <option data-show='.fish'>Fish</option>
</select>

Selecting Cats will hide .dogs, .fish. Also, when the page loads (or when a page:change event is fired) Toggler will find all toggling select options and radio buttons and set the visibility of their target elements to match the current state.

Here's another example:

<select>
  <option>None</option>
  <option data-show='.cats, .dogs'>Mammals</option>
  <option data-show='.fish'>Fish</option>
</select>

Selecting:

  • "None" will hide .cats, .dogs, .fish.
  • "Mammals" will hide .fish.
  • "Fish" will hide .cats, .dogs.

Radio buttons with matching name attributes work just like select options. Here's the equivilent HTML for radio buttons.

<input type='radio' name='animal' data-show='.cats' value='cats' id='cats'><label for="#cats">Cats</label>
<input type='radio' name='animal' data-show='.dogs' value='dogs' id='dogs'><label for="#dogs">Dogs</label>
<input type='radio' name='animal' data-show='.fish' value='fish' id='fish'><label for="#fish">Fish</label>

Anchors

Adding the data-anchor='#name' attribute to a select <option> or radio input, will change the window.location.hash property to match the current selection. Also when a page loads, if the current page anchor matches a data-anchor attribute it will select that option or check that input.

Toggling Classnames

Much like visiblity toggling, toggling classes with links or buttons works a bit differently than inputs with states.

Class toggling is triggered by the data attributes data-toggle-class, data-add-class, or data-remove-class. Here are some examples values:

  • classname - add/remove/toggle classname on current element.
  • foo bar - multiple classnames, separated by spaces (like the html class property).
  • foo bar; .selector - change classnames on elements matching .selector.
  • foo bar; #selector, .selector - changes classnames on multiple elements.

Toggle the class active on a navigation menu when clicking a button.

<button data-toggle-class='active; .nav-menu'>Toggle Navigation</button>

You can also change different classnames on multiple elements by using the & character. For example:

  • classname & foo; .selector - add/remove/toggle 'classname' on current element and 'foo' on elements matching .selector.
  • highlighted; #selector & active; .selector - multiple classnames are changed on multiple elements.

Toggling classes with inputs: Checkbox, Radio Button, Select Option

Again, checkboxes toggle based on the state of the input. With data-class-toggle, or data-class-add, If a checkbox is checked classes will be added, if unchecked they'll be removed. Also with data-class-remove the behavior will be inverted.

Selects and radio inputs behave much like they do with data-show. With each, only data-add-class is used. Classes are added based on the selected item and removed based on the items which aren't selected.

In the follwing example, selecting different inputs will change the class name on elements matching the selector .some-div. If the first input is selected. .some-div will have the class cats and if it has the classes dogs or fish, they will be removed.

<input type='radio' data-add-class='cats; .some-div' name='test' id='cats'><label for="#cats">Cats</label>
<input type='radio' data-add-class='dogs; .some-div' name='test' id='dogs'><label for="#dogs">Dogs</label>
<input type='radio' data-add-class='fish; .some-div' name='test' id='fish'><label for="#fish">Fish</label>

The next example is the same except, by using the & two elements are targetd with the classname changes. In this case, since there are class names but no selectors, the classnames are added to or removed from the select element. You might do this if you want to style the select differently based on what is chosen.

<select>
  <option data-add-class='cats & cats; .some-div'>Cats</option>
  <option data-add-class='dogs & dogs; .some-div'>Dogs</option>
  <option data-add-class='fish & fish; .some-div'>Fish</option>
</select>

For example, when the first option is chosen, the seelct will have the classname cats added and elements matching .some-div will have the classname cats added too. If either of these had the classnames dogs or fish those would be removed.