html编写代码如何在关闭网页时弹出确认对话框！点击确认关闭，取消不关闭 JS 网页弹出对话框,可以自定义一段文字,点击"确定"后转到...
\u7528javascript\u5199\u5728\u70b9\u51fb\u5173\u95ed\u7f51\u9875\u65f6\uff0c\u5f39\u51fa\u5bf9\u8bdd\u6846\u95ee\u662f\u5426\u5173\u95ed\u9875\u9762\uff1f\uff1f\uff1f\uff1f\u6025\u7b49\u80fd\u7528\u7684\uff01\uff01\uff01// \u6211\u8bd5\u8fc7\u4e86 \u8fd9\u6837\u53ef\u4ee5\u7684
Documentwindow.onbeforeunload = function(e){e.returnValue = '\u786e\u5b9a\u79bb\u5f00\u5f53\u524d\u9875\u9762\u5417?';} \u6211\u8bd5\u8fc7\u4e86 \u8fd9\u6837\u53ef\u4ee5\u7684
\u4e0d\u7528\u5b9a\u4e49\u65b9\u6cd5function\uff0c\u76f4\u63a5\u8fd9\u6837\u5199
if(confirm("\u786e\u8ba4\uff1f")){
location.href="a.jsp";
}else{
window.close();
}
\u90a3\u4e2aa.jsp\u4f60\u53ef\u4ee5\u968f\u4fbf\u6539\uff0c\u60f3\u8df3\u54ea\u5c31\u8df3\u54ea\u3002
\u7ed9\u91c7\u7eb3\u5440\u54e5\u4eec\uff01
在关闭时写入onclick事件，代码如下：
onclick="return confirm('您确定要删除此信息吗？')"
window.onunload=function()
{
return window.confirm( 'Are you sure to exit ? ');
}
window.onunloadBefore=function(){..........}
大哥这个功能你实现了吗？求答案
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