javascript - 检查警报是否被阻止

Question

目前，我有：

if (confirm("Are you sure?")) { do something }

• 当消息显示并且用户单击“确定”时，它是true.

• 当消息显示并且用户单击“取消”时，它是false.

• 如果用户选中“阻止此页面创建其他对话框”框，则确认将始终返回false。

是否可以检查用户是否选中了“防止此页面创建其他对话框”框？

我想做的是：

var dialogsPrevented = // boolean that depicts whether dialogs are being suppressed.
if (dialogsPrevented || confirm("Are you sure?")) { do something }

标签： javascript

Answer 1

Check Date.now() before and after. Unless the user clicked the button within like a hundredth of a second, you can be fairly sure the dialog was blocked.

function checkedConfirm(query) {
    var time = Date.now();
    var response = confirm(query);
    if( response) return "TRUE";
    if( Date.now() - time > 10) return "FALSE";
    return "DIALOG_NOT_FOUND";
}

Adjust return values as necessary/useful.