javascript - 如何测试命名窗口是否打开或被弹出窗口阻止程序阻止？

Question

我正在使用以下代码在 javascript 中打开一个窗口(实际上是 PayPal):

win = window.open('', this.name, 'top=' + top + ', left=' + left + 
  ', width=' + width + ', height=' + height + 
  ', location=0, status=0, toolbar=0, menubar=0, resizable=0, scrollbars=1');

如果 Chrome 的弹出窗口阻止程序停止创建窗口，我希望能够检测到并提醒用户。我可以在 win 上运行某种测试来查看它是否真的打开过吗？

Answer 1

如 Window.open() 中所述:

How can I tell when my window was blocked by a popup blocker?

With the built-in popup blockers of Mozilla/Firefox and Internet Explorer 6 SP2, you have to check the return value of window.open(): it will be null if the window wasn't allowed to open. However, for most other popup blockers, there is no reliable way.

因此，如果 window.open 的返回值为 null 或 undefined 这意味着窗口被阻止。