try_win_closed 在线代码实例

实例代码( Tip: 登录后体验更佳 )
运行代码

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<!DOCTYPE html>
<html>
<head>
<script>
var myWindow;
function openWin()
{
myWindow=window.open("","","width=400,height=200");
}
function closeWin()
{
if (myWindow)
  {
  myWindow.close();
  }
}
function checkWin()
{
if (!myWindow)
  {
  document.getElementById("msg").innerHTML="'myWindow' has never been opened!";
  }
else
  {
  if (myWindow.closed)
    { 
    document.getElementById("msg").innerHTML="'myWindow' has been closed!";
    }
  else
    {
    document.getElementById("msg").innerHTML="'myWindow' has not been closed!";
    }
  } 
 
 
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运行结果
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