前台的html
//form表单
<iframe name="myform" id="myform" frameborder="0" src="" style="display:none;"></iframe>
<div class="popCon">
<form method="post" action="?act=add" target="myform">
<fieldset>
<input type="text" name="username" id="username"/>
<input type="text" name="phone" id="phone"/>
</fieldset>
</form>
<a class="close jqmClose" href="javascript:void(0)" title="关闭">关闭</a>
</div>
后台的php文件
alert("恭喜您已成功提交留言信息，审核中......");
function alert($str, $exit = false) {
echo '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
echo '<script language="javascript">window.alert("' . $str . '");</script>';
$exit && exit ();
}
触发后后台的数据会传到<iframe>框架中，而前台页面并不会跳转。页面上就出现
