Sortable

Features

• Support touch devices and modern browsers
• Built using native HTML5 drag and drop API
• Simple API
• Lightweight, 2KB gzipped
• No jQuery

Usage

<ul id="items">
	<li>item 1</li>
	<li>item 2</li>
	<li>item 3</li>
</ul>

var el = document.getElementById('items');
new Sortable(el);

---

Options

new Sortable(el, {
	group: "name",
	store: null, // @see Store
	handle: ".my-handle", // Restricts sort start click/touch to the specified element
	draggable: ".item",   // Specifies which items inside the element should be sortable
	ghostClass: "sortable-ghost",
	
	onStart: function (/**Event*/evt) { // dragging
		var itemEl = evt.item;
	},

	onEnd: function (/**Event*/evt) { // dragging
		var itemEl = evt.item;
	},

	onAdd: function (/**Event*/evt){
		var itemEl = evt.item;
	},

	onUpdate: function (/**Event*/evt){
		var itemEl = evt.item; // the current dragged HTMLElement
	},

	onRemove: function (/**Event*/evt){
		var itemEl = evt.item;
	}
});

---

Method

toArray():String[]

Serializes the sortable's item data-id's into an array of string.

sort(order:String[])

Sorts the elements according to the array.

var order = sortable.toArray();
sortable.sort(order.reverse()); // apply

destroy()

---

Store

Saving and restoring of the sort.

new Sortable(el, {
	group: "localStorage-example",
	store: {
		/**
		 * Get the order of elements. Called once during initialization.
		 * @param   {Sortable}  sortable
		 * @retruns {Array}
		 */
		get: function (sortable) {
			var order = localStorage.getItem(sortable.options.group);
			return order ? order.split('|') : [];
		},

		/**
		 * Save the order of elements. Called every time at the drag end.
		 * @param {Sortable}  sortable
		 */
		set: function (sortable) {
			var order = sortable.toArray();
			localStorage.setItem(sortable.options.group, order.join('|'));
		}
	}
})

---

Sortable.utils

• on(el:HTMLElement, event:String, fn:Function) — attach an event handler function
• off(el:HTMLElement, event:String, fn:Function) — remove an event handler
• css(el:HTMLElement):Object — get the values of all the CSS properties
• css(el:HTMLElement, prop:String):Mixed — get the value of style properties
• css(el:HTMLElement, prop:String, value:String) — set one CSS properties
• css(el:HTMLElement, props:Object) — set more CSS properties
• find(ctx:HTMLElement, tagName:String[, iterator:Function]):Array — get elements by tag name
• bind(ctx:Mixed, fn:Function):Function — Takes a function and returns a new one that will always have a particular context
• closest(el:HTMLElement, selector:String[, ctx:HTMLElement]):HTMLElement|Null — for each element in the set, get the first element that matches the selector by testing the element itself and traversing up through its ancestors in the DOM tree
• toggleClass(el:HTMLElement, name:String, state:Boolean) — add or remove one classes from each element