打开新网页中"_blank"是什么意思啊?
<script type="text/javascript">
function openWindon(){
if(confirm("确定打开新窗口吗?")){
var url = prompt("请输入一个网址","http://www.imooc.com/");
window.open( url,"_blank","toolbar=no, menubar=no, scrollbars=yes, width=400, height=400");
}
}
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindon()" />