先看一段代码(PHP例子)
1、表单代码(form.php):
[php] view plaincopy
<?php  
header("Content-type: text/html; charset=utf8");  
?>  
<iframe name="testIframeName" style="display:none;"></iframe>  
<form target="testIframeName" method="post" action="formAction.php">  
<input type="text" name="username"/>  
<input type="password" name="password"/>  
<input type="submit" value=" 提 交 " />  
</form>  
2、action代码(formAction.php):
[php] view plaincopy
<?php  
echo "<script>alert(‘test....‘);</script>";  
?>  
原文地址:http://www.cnblogs.com/liu201312/p/3716250.html