Chosen插件下载地址
https://www.jb51.net/jiaoben/38027.html
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script>
<script src="chosen/chosen.jquery.js" type="text/javascript"></script>
应用JS文件
<select class="chzn-select" data-placeholder="Choose a Country" style="width:350px;" tabindex="1">
<option value=""></option>
<option value="United States">United States</option>
<option value="United Kingdom">United Kingdom</option>
<option value="Afghanistan">Afghanistan</option>
<option value="Albania">Albania</option>
</select>
class设这为chzn-select
初始化：$(".chzn-select").chosen();
对select进行操作时候需注意如下：先删除外部套用的层在经常操作，最后在加上$(".chzn-select").chosen();
var selectObj = $("#slectplat");
selectObj.parent().children().remove('div');
selectObj.removeClass();
$("#slectplat").val(_plat);
selectObj.addClass("chzn-select");
selectObj.chosen();
