jsの問題

<script src="http://cdn.bootcss.com/jquery/1.11.1/jquery.min.js"></script><div class="tables"><select name="one" id="one">	<option value = 1>test</option>	<option value = 2>test1</option></select><select name="two" id="two">	<option value = 1>haha1</option>	<option value = 2>haha1</option></select><button onclick="save()">保存</button></div><script type="text/javascript">	function save(){		$(".tables select option:selected").each(function(){        var signSelect = this.name+"="+this.value;         alert(signSelect);            });	}</script>

<option value = 1>test</option>