<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>打开和关闭窗口</title>
</head>
<body>
<p><input type="button" value="打开窗口" onclick="openWin()"></p>
<p><input type="button" value="关闭窗口" onclick="closeWin()"></p>
<p><input type="button" value="检测窗口是否关闭" onclick="checkWin()"></p>
<p id="msg"></p>
<script>
var myWindow;
function openWin() {
myWindow = window.open('', 'newWin', 'width=400,height=200,left=200');
myWindow.document.write('<p>窗口名称为：' + myWindow.name + '</p>');
myWindow.document.write('<p>当前窗口的父窗口地址：' + window.parent.location + '</p>');
}
function closeWin() {
myWindow.close();
}
function checkWin() {
if (myWindow) {
var str = myWindow.closed ? '窗口已关闭！' : '窗口未关闭！';
} else {
var str = '窗口没有被打开!';
}
document.getElementById('msg').innerHTML = str;
}
</script>
</body>
</html>