javascript实现自动关闭的alert对话框

转自： http://hi.baidu.com/803110/item/0bff6bce2d01023298b498c0

其实使用一个非模式对话框模拟出alert对话框的效果，代码如下——

<script language="JavaScript">

var aaa

function test()

{

aaa=if0.showModelessDialog("javascript:alert();window.close();","","status:no;resizable:no;help:no;dialogHeight:30px;dialogWidth:40px;");

setTimeout("if0.location.reload();",1000);

}

</script>

<iframe name=if0 ></iframe>

<input type="button" value="弹出alert框,一秒后自动关闭;" onClick="JavaScript:test()">

</form>