<form id="form" action="" method="post">
<input type="text" name="text1" />
<select id="act">
<option value="##">选择action</option>
<option value="knowskyhttp://www.knowsky.com">knowsky</option>
<option value="devdaohttp://www.devdao.com">devdao</option>
</select>
<input type="submit" value="提交" />
</form>
<script>
function $(e){ document.getElementById(e);}
$('form').onsubmit=function{
this.action = $('act').value;
alert('按钮即将提交action是'+this.action.toString);//使用时可以删除本行
}
</script>
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