php- js在不跳转的情况下向一个页面传递参数

<code> <form name="form1" id="form1" method="post" action="newtest.php">            <input type="hidden" name="text1" value="<?php echo $text1;?>" size="30"><br>            <textarea name="textarea1" rows="10" cols="150"><?php echo $text1;?></textarea><br>            <input type="button" name="finish" value="完成拆分" onclick="save()">        </form> function save(){               //省略的代码是获得textarea的值                var formdeal= document.getElementById("form1");                 formdeal.action="savexml.php?parms="+str;               formdeal.target="_self";                formdeal.submit();}后台接收如下：<?php $str1=$_REQUEST['parms'];?></code>