Javascript無法在Chrome卸載事件上運行？

Question

我有一些簡單的JavaScript，我想在聯繫頁面上運行，它應該在頁面加載時顯示彈出窗口，並在用戶導航時顯示不同的彈出窗口。

我下面的代碼在IE上工作正常，但在Chrome上onunload部分完全不起作用。

有沒有解決這個問題的方法？

<script> 
      window.onload = function(){ 
       alert('Even if you aren\'t interested, please give our design some feedback as we would like to stay current.'); 
       return; 
      } 
      window.onunload = function(){ 
       alert('Thank you for your time and consideration'); 
       return; 
      } 
    </script> 

Answer 1

嘗試：

window.onload = function(){ 
      alert('Even if you aren\'t interested, please give our design some feedback as we would like to stay current.'); 
      return; 
     } 
     window.beforeunload = function(){ 
      alert('Thank you for your time and consideration'); 
      return; 
     }