时间：2020-10-14 10:04:17 | 栏目：jquery | 点击：次
实例如下所示：
<pre name="code" class="html"><script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
<select class="form-control" id='selectId'>
<option class="all" value="0">全部</option>
<option class="all" value="1">os2</option>
<option>os2-anthonos</option>
<option>os2-apps</option>
<option>os2-centralpoint</option>
<option>kf5-experimental</option>
</select>
<script>
//动态添加option
//$("#selectId").append("<option value='"+value+"'>"+text+"</option>");
$(document).ready(function(){
var string = "";
$("#selectId option").each(function(){ //遍历全部option
var text = $(this).text(); //获取option的text
var value = $(this).val(); //获取option的value
if($(this).attr("class")=="all")
string +="{"+text+":"+value+"}";
});
alert(string.substring(0,string.length));
});
</script>