<p>
	<input type="button" id="loading1" value="loading我自己">
	<input type="button" id="loading2" value="loading下面这个div">
	<input type="button" id="loading3" value="loading全屏">
</p>
<div id="loading-content" style="width:300px;height:200px;border:1px solid #ccc;background-color:#f2f2f2;">这是个内容的例子</div>
<script src="../src/jquery-1.11.2.js"></script>
<script src="../src/loading.js"></script>

//loading我自己
$('#loading1').click(function(){
	var load = new Loading();
	load.init({
		target: this
	});
	load.start();
	setTimeout(function() {
		load.stop();
	}, 3000)
});
//loading下面这个div
$('#loading2').click(function(){
	var load = new Loading();
	load.init({
		target: "#loading-content"
	});
	load.start();
	setTimeout(function() {
		load.stop();
	}, 3000)
});
//loading全屏
$('#loading3').click(function(){
	var load = new Loading();
	load.init();
	load.start();
	setTimeout(function() {
		load.stop();
	}, 30000)
});

需要显示loading的节点，不传值时显示全屏的loading

开始loading

结束loading,这里会销毁loading节点

target的stop事件触发时，结束loading. 如
$('html').trigger('stop')会结束全屏的loading动画.