Chosen—jquery选择框插件

<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="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();