jquery.selectable.js - Turn a collection of HTML elements into a selectable list

Developed by Cory LaViska for A Beautiful Site, LLC

Licensed under the MIT license: http://opensource.org/licenses/MIT

Overview:

This plugin provides a minimal, lightweight solution to turn a collection of HTML elements into a selectable list.

Features:

• Turn any collection of elements into a selectable list
• Supports single and multiple selections
• Flexible markup! Molds to your HTML and CSS.
• Customizable class names
• Customizable getter
• Callbacks for click, double click, change
• API to get, set, select all, select none, and disable selection
• Compact! (About 230 lines)

Installing

Include the minified version of this plugin in your project or install via NPM:

npm install --save @claviska/jquery-selectable

Attaching the plugin

Minimal example that attaches the plugin to a group of list items:

<ul class="my-list">
  <li data-value="some-val-1">Item 1</li>
  <li data-value="some-val-2">Item 2</li>
  <li data-value="some-val-3">Item 3</li>
</ul>

$('.my-list').selectable();

This will let you select any <li> inside of .my-list by clicking on it. When an item is selected, it will receive the active class by default. For flexibility, the plugin doesn't add styles to selected elements — this is left to your stylesheet.

Example with all possible options:

$('.my-list').selectable({
  // Options (default shown)
  getValue: function() {
    return $(this).attr('data-value');
  },
  items: 'li',
  multiple: false,
  disabledClass: 'disabled',
  selectedClass: 'selected',

  // Callbacks
  change: function(values, elements) { ... },
  click: function(value, element, event) { ... }
});

Options

• getValue: a getter function that returns the value of an element in your collection. By default, the plugin will use the data-value attribute.

• items: a selector used to group items into the collection. Defaults to li. Try a to make a group of links selectable or .my-class to make all items with a specific class selectable. (The selector will only match children of the container that you instantiated the plugin on.)

• multiple: whether or not multiple selections are allowed. Defaults to false.

• disabledClass: a class to apply to each item when the control is disabled. Defaults to disabled.

• selectedClass: a class to apply to each selected item. Defaults to selected.

Callbacks

All callbacks are called in the context of the respective container you instantiated the plugin on.

For the change callback, two arguments are available. The first is an array of selected values and the second is an array containing the selected elements.

For the click callback, three arguments are available. The first is the value of the target item, the second is the target element, and the third is the event.

• change: runs when the selection changes, including when changes are made programmatically.
• click: runs when an item is clicked. Returning false will prevent the selection from being toggled.

Using Anchors? If your selectable targets are <a> elements, the plugin will automatically prevent clicks from hijacking the page — there's no need to use your own event.preventDefault() on them.

Methods

Methods are called using this syntax:

$('.my-list').selectable('method', arg);

The following API methods are supported:

• change: Triggers the change event (will only run if a change has actually been made). Useful when you need to trigger a change after working with items directly in the DOM.

• create (default): initializes the plugin on the given container.

• destroy: returns the control to its pre-initialized state.

• getElements: returns a jQuery object containing all elements in the collection. Passing true as an argument will return only selected elements. Passing a string or an array will return all elements that have those values.

• selectAll: selects all items in the collection.

• selectNone: clears selection from all items in the collection.

• value: when no argument is passed, this method returns an array of values of the current selection. When a string or array is passed as an argument, this method will set the selection to any item matching the specified values.

Changelog

• 2.0.0
  • Fixed a bug where using the click callback would prevent selection from being toggled.
  • Removed the doubleClick callback. Users who need this are encouraged to attach their own listener and use the methods above to obtain the selected values and elements.