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不刷新提交表单

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="http://www.mamicode.com/提 交" />  
</form>  

2、action代码(formAction.php):

[php] view plaincopy

<?php  
echo "<script>alert(‘test....‘);</script>";  
?>