javascript - javascript中通过window.open()判断窗口是否关闭

Question

在 JavaScript 中是否可以通过 window.open() 确定窗口是否关闭？ 以下是打开窗口的简单代码。

<script type="text/javascript">
var win = window.open("test.htm")
</script>

当某个事件被触发时。事件处理程序应该确定窗口仍然打开。

if ( /* is a window alive */ )
    alert("window is still alive!");
else
    alert("window was closed!");

Answer 1

检查Window.closed property .

This property indicates whether the referenced window is closed or not. [Read only].