MUI-button（按钮），加载中按钮

当用户点击按钮后，需要向服务端提交数据或等待服务端响应时，常常需要提示“正在提交”，并将按钮设置为disabled，避免用户重复点击、重复提交；加载中按钮支持修改 loading状态的文案、显示的icon和icon的位置,如下:

属性名	作用
`data-loading-text`	loading 状态显示的文案,默认为: `loading`
`data-loading-icon`	loading 状态显示的icon,默认为`mui-spinner`或`mui-spinner mui-spinner-white`（根据按钮样式自动识别），为空表示不使用icon
`data-loading-icon-position`	loading 状态显示的icon的位置,支持left/right，默认left

1、默认，左侧loading图标：

<button type="button" class="mui-btn mui-btn-primary">确认</button>

2、右侧loading图标，增加data-loading-icon-position="right"：

<button type="button" class="mui-btn mui-btn-primary" data-loading-text="提交中" data-loading-icon-position="right">确认</button>

3、无loading图标，增加data-loading-icon=""：

<button type="button" class="mui-btn mui-btn-primary" data-loading-icon="">确认</button>

4、自定义loading图标，增加data-loading-text、data-loading-icon、 data-loading-icon-position三个属性的设置：

<button type="button" class="mui-btn mui-btn-primary" data-loading-text="提交中" data-loading-icon="mui-spinner mui-spinner-custom" data-loading-icon-position="right">确认</button>

5、触发事件，JS如下：

mui(document.body).on('tap', '.mui-btn', function(e) {
			mui(this).button('loading');//切换为loading状态
			setTimeout(function() {
				mui(this).button('reset');//切换为reset状态(即重置为原始的button)
			}.bind(this), 2000);
});

6、全部状态展示效果：

源码：

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>Hello MUI</title>
		<meta name="viewport" content="width=device-width, initial-scale=1,maximum-scale=1,user-scalable=no">
		<meta name="apple-mobile-web-app-capable" content="yes">
		<meta name="apple-mobile-web-app-status-bar-style" content="black">

		<!--标准mui.css-->
		<link rel="stylesheet" href="../css/mui.min.css">
		<!--App自定义的css-->
		<link rel="stylesheet" type="text/css" href="../css/app.css" />
		<style>
			input,
            button,
            .mui-btn {
                margin: 5px 15px 10px 5px;
                
            }
            .mui-spinner {
                display: inline-block;
                width: 24px;
                height: 24px;
                -webkit-transform-origin: 50%;
                transform-origin: 50%;
                -webkit-animation: spinner-spin 1s step-end infinite;
                animation: spinner-spin 1s step-end infinite;
            }
            
            .mui-spinner:after {
                display: block;
                content: "";
                width: 100%;
                height: 100%;
                background-position: 50%;
                background-size: 100%;
                background-repeat: no-repeat;
            }
            
           .mui-spinner-custom:after {
                background-image: url("data:image/svg+xml;charset=utf-8,<svg viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink'><defs><line id='l' x1='60' x2='60' y1='7' y2='27' stroke='red' stroke-width='11' stroke-linecap='round'/></defs><g><use xlink:href='%23l' opacity='.27'/><use xlink:href='%23l' opacity='.27' transform='rotate(30 60,60)'/><use xlink:href='%23l' opacity='.27' transform='rotate(60 60,60)'/><use xlink:href='%23l' opacity='.27' transform='rotate(90 60,60)'/><use xlink:href='%23l' opacity='.27' transform='rotate(120 60,60)'/><use xlink:href='%23l' opacity='.27' transform='rotate(150 60,60)'/><use xlink:href='%23l' opacity='.37' transform='rotate(180 60,60)'/><use xlink:href='%23l' opacity='.46' transform='rotate(210 60,60)'/><use xlink:href='%23l' opacity='.56' transform='rotate(240 60,60)'/><use xlink:href='%23l' opacity='.66' transform='rotate(270 60,60)'/><use xlink:href='%23l' opacity='.75' transform='rotate(300 60,60)'/><use xlink:href='%23l' opacity='.85' transform='rotate(330 60,60)'/></g></svg>");
            }
        </style>
	</head>

	<body>
		<header class="mui-bar mui-bar-nav">
			<a class="mui-action-back mui-icon mui-icon-left-nav mui-pull-left"></a>
			<h1 class="mui-title">加载中按钮插件</h1>
		</header>
		<div class="mui-content">
			<div class="mui-content-padded">
				<p style="margin-bottom: 25px;">当用户点击按钮后，需要向服务端提交数据或等待服务端响应时，
					常常需要提示“正在提交”，并将按钮设置为disabled，避免用户重复点击、重复提交；
					mui的加载中按钮就实现了类似效果，点击如下按钮体验：</p>
				<h5>左侧loading图标：</h5>
				<button type="button" class="mui-btn mui-btn-primary">确认</button>
				<h5>右侧loading图标：</h5>
				<button type="button" class="mui-btn mui-btn-primary" data-loading-text="提交中" data-loading-icon-position="right">确认</button>
				<h5>无loading图标：</h5>
				<button type="button" class="mui-btn mui-btn-primary" data-loading-icon="">确认</button>
				<h5>自定义loading图标：</h5>
				<button type="button" class="mui-btn mui-btn-primary" data-loading-text="提交中" data-loading-icon="mui-spinner mui-spinner-custom" data-loading-icon-position="right">确认</button>
				<h5>其他button效果</h5>
				<button type="button" class="mui-btn">确认</button>
				<button type="button" class="mui-btn mui-btn-outlined mui-btn-primary">确认</button>
				<button type="button" class="mui-btn mui-btn-primary">
					确认
					<span class="mui-badge mui-badge-primary">2</span>
				</button>
				<button type="button" class="mui-btn mui-btn-block mui-btn-primary">确认</button>
			</div>
		</div>
	</body>
	<script src="../js/mui.min.js"></script>
	<script>
		mui.init({
			swipeBack: true //启用右滑关闭功能
		});
		mui(document.body).on('tap', '.mui-btn', function(e) {
			mui(this).button('loading');//切换为loading状态
			setTimeout(function() {
				mui(this).button('reset');//切换为reset状态(即重置为原始的button)
			}.bind(this), 2000);
		});
	</script>

</html>

MUI-button（按钮），加载中按钮

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