怎样prompt接收的值？
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "[url=http://www.]http://www.[/url]"><html xmlns="[url=http://www.]http://www.[/url]">
<head>
<meta http-equiv="Content-Type" c />
<title>无标题文档</title>
<script language='javascript'>
function pro(){
var tempA=window.prompt("Plese input your name!","")
if( tempA=="" || tempA==null ){
tempA="You are null!"
}
alert(tempA);
}
</script>
</head>
<body >
</body>
</html>
