如何使用window.onbeforeunload？

Question

I have a small webpage. 我有一个小网页。 i need to activate my ajax function when browser is closed 关闭浏览器后，我需要激活我的ajax功能

I using below JavaScript for that in the <head> 我在<head>使用下面的JavaScript

<script language="JavaScript" type="text/javascript">
 window.onbeforeunload = confirmExit;
  function confirmExit()
  {    
    my ajax_function();
    return "";
  }
</script>

But this function works all in the Back button, Forward button, ALT+f5, CTL+f5, Submit etc... But i need this function only when browser is closed 但是此功能在“ 后退”按钮，“前进”按钮，ALT + f5，CTL + f5，“提交”等所有功能中均有效。但是我仅在关闭浏览器时才需要此功能

But i try like below in my webpage to block the events like Back button, Forward button, ALT+f5, CTL+f5, Submit etc... 但是我尝试在网页中像下面这样阻止诸如后退按钮，前进按钮，ALT + f5，CTL + f5，提交等事件。

<script type="text/javascript">
$(function () { 

$('a').click(function(){window.onbeforeunload = null;});
$(window).keydown(function(event) { 
  if (event.keyCode == 116) { // User presses F5 to refresh
     window.onbeforeunload = null;
   }});
$('form').submit(function() {

   window.onbeforeunload = null;
});

});

</script>

But this only for hyperlink, refresh, and submit. 但这仅适用于超链接，刷新和提交。

What i need is, window.onbeforeunload function only works when browser is closed 我需要的是， window.onbeforeunload函数仅when browser is closed

Answer 1

JavaScript不会区分这些事件，它们都是由于用户离开页面而触发的。

如何使用window.onbeforeunload？

问题描述

1 个解决方案

解决方案1
0 2013-03-25 08:44:49

如何使用window.onbeforeunload？

问题描述

1 个解决方案

解决方案1 0 2013-03-25 08:44:49

解决方案1
0 2013-03-25 08:44:49