由于原生的alert和confirm在不同手机上显示样式不一样，而且也难看。所以用css模拟了原生的alert和confirm实现。
具体代码如下：
<!DOCTYPE html>
<html>
<head>
<title>confirm和alert的demo</title>
<meta charset="UTF-8">
<script src="jquery.min.js"></script>
<style type="text/css">
/*w-error-popup-white*/
.w-error-popup-white{ width: 100%; height: 100%; z-index: 999; position: fixed; left: 0; top:0;}
.w-error-popup-white .w-error-back{ width: 100%; height: 100%; background-color: rgba(0,0,0,.8); position:fixed; z-index: 1000; left: 0; top:0;}
.w-error-popup-white .w-error-inner{ background-color: #fff; width: 90%; top: 15%; left: 50%; margin-left: -45%; text-align: center; border-radius: 20px; padding: 0; z-index: 1001; position: relative;}
.w-error-popup-white .w-error-inner h4{ font-size: 20px; color: #333; padding: 16px 0; margin: 0 32px; border-bottom: 1px solid #e5e9ec; font-weight: normal; }
.w-error-popup-white .w-error-inner .w-error-content{ color: #333; font-size: 16px; line-height: 45px; padding: 32px; height: 270px; overflow-y:auto; overflow-x:hidden; text-align: left; }
.w-close{ background: url(../images/result-error-x.png) no-repeat right 16px; float: right; right:18px; top:0; position:absolute; z-index: 999; width: 100px; height:85px; cursor:pointer; display: block; background-size:60%;}
/*u-btn */
.u-btn{ padding: 16px 80px; background-color: #92c153; border-bottom: 5px solid #7da646; border-radius: 8px; color: #fff; display: inline-block; vertical-align: middle;}
.u-btn-red{ background-color: #ec7d69; border-color: #e95c44;}
</style>
</head>
<body>
<input type="button" value="模拟confirm" id="confirmId" onclick="confirmClickMethed()"/>
<input type="button" value="模拟alert" id="alertId" onclick="alertClickMethed()"/>
<!-- 所有页面都共享confirm提示框 -->
<div id="w-error-popup-white" style="display: none;"
class="w-error-popup-white">
<div class="w-error-back"></div>
<div class="w-error-inner">
<div id="w-confirm-content" class="w-error-content" style="height: auto; font-size: 26px;">
取消后不能恢复，确定取消么？</div>
<div class="btn" style="padding: 1rem; text-align: right;">
<a class="u-btn u-btn-red"
href="javascript:canclePopup();">取消</a> <a id="sure"
class="u-btn" href="javascript:sure();">确定</a>
</div>
</div>
</div>
<!-- 所有页面都共享alert提示框 -->
<div id="w-alert-popup-white" style="display: none;"
class="w-error-popup-white">
<div class="w-error-back"></div>
<div class="w-error-inner">
<div id="w-alert-content" class="w-error-content" style="height: auto; font-size: 26px;">
这是提示内容
</div>
<div class="btn" style="padding: 1rem; text-align: right;">
<a class="u-btn u-btn-red"
href="javascript:alertHide();">确定</a>
</div>
</div>
</div>
<script type="text/javascript">
function sure(){
$("#w-error-popup-white").hide();
alert("确定");
}
function canclePopup(){
$("#w-error-popup-white").hide();
}
function alertHide(){
$("#w-alert-popup-white").hide();
}
function confirmClickMethed(){
$("#w-confirm-content").html("这是一个confirm内容，取消还是确认呢？");
$("#w-error-popup-white").show();
}
function alertClickMethed(){
$("#w-alert-content").html("这是一个alert内容");
$("#w-alert-popup-white").show();
}
</script>
</body>
</html>文件需要引入jquery。下载地址为：
链接: http://pan.baidu.com/s/1qWxOoC8 密码: w541
原文地址：http://blog.csdn.net/zl544434558/article/details/49925739
