<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>Dom</title>
<script type="text/javascript">
function testConfirm(){
var answer=window.confirm("确定是否退出？");
if(answer){
window.close();
}
else {
window.alert(":-)");
}
}
</script>
</head>
<body>
<input type="button" value="testConfirm" onclick="testConfirm()">
</body>
</html>