标签：script page 出现 return load ext for before 数据
<script type="text/javascript"> var unloadPageTip = function(){return "刷新页面有可能会丢失数据";}; window.onbeforeunload = unloadPageTip; </script>
标签：script page 出现 return load ext for before 数据
原文地址：http://www.cnblogs.com/wangxiaoxiaos/p/7895243.html
