Javascript onbeforeunload关闭浏览器窗口 [英] Javascript onbeforeunload close browser window

问题描述

我现在有一个很小的脚本，用于检查表单上是否有任何更改.如果有变化 然后我将标志设置为"Y".我在body标签中的onBeforeunload ="changeConfirm()"位置上调用此函数.我知道 我无法阻止用户关闭窗口，但是在他进行了更改的情况下，如何使该方案起作用 ->决定关闭窗口->脚本警告他->用户点击取消(现在我需要将他带回屏幕 而不是关闭浏览器.

I have this tiny script for now that checks if any change is made on the form. If there is a change then I set a flag to 'Y'. I call this function on onBeforeunload="changeConfirm()" places in the body tag. I know I can't stop the user from closing down the window, but how do I make this scenario work where he made a change -> decide to close the window -> Script alerted him -> User clicks cancel (Now I need to bring him back to the screen instead of closing browser.

<script type="text/javascript">
var Flag= "";

function changeConfirm(){
if(Flag == 'Y')
 {
  var confirmStatus = confirm('Changes made. Dont want to save?');
 }
 else {
  alert("No changes were made " + Flag);
 }
}
 </script>

推荐答案

尝试一下:

 function confirmChanges() {
  if(Flag == 'Y')
   {
    if(confirm('Changes made. Dont want to save?')){
      return false;
    }else{
      return true;
    }
   }
   else {
    alert("No changes were made " + Flag);
   }
}

这篇关于Javascript onbeforeunload关闭浏览器窗口的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！