(转载)离开页面之前执行的事件 onbeforeunload
先保存下 然后慢慢研究
<script type="text/javascript">
var pb_strConfirmCloseMessage;
var pb_blnCloseWindow = false;
pb_strConfirmCloseMessage = "确实要离开该页面吗?您的文章内容还没有进行保存！按“确定”继续，或按“取消”留在当前页面。";
function ConfirmClose() {
window.event.returnValue = pb_strConfirmCloseMessage;
pb_blnCloseWindow = true;
}
function ShowConfirmClose(blnValue) {
if (blnValue) {
document.body.onbeforeunload = ConfirmClose;
} else {
document.body.onbeforeunload = null;
}
}</script>
</head>
<body onload="ShowConfirmClose(true)">
