//获取对象
var el = document.getElementById('itxst');
//设置配置
var ops = {
	animation: 1000,
	draggable: '.item',
	//拖动结束
	onEnd: function (evt) {
		console.log(evt);
		//获取拖动后的排序
		var arr = sortable.toArray();
		alert(JSON.stringify(arr));
	},
};
//初始化
var sortable = Sortable.create(el, ops);