<html>
<body>
<form action="" method="post" target="iframe">
<input type="text" name="name" />
<input type="submit" value="提交" />
</form>
<iframe name="iframe" style="display:none;"></iframe>
</body>
</html>
<html>
<body>
<form action="" method="post" target="iframe">
<input type="text" name="name" />
<input type="submit" value="提交" />
</form>
<iframe name="iframe" style="display:none;"></iframe>
</body>
</html>