美化select的jquery插件

自己写的一个美化select插件，浏览器自带的实在太丑，还不能用css自定义。

插件主要原理是隐藏原生的select控件，支持select上设置change事件。

脚本

 /*
 * iSelect
 * 自定义select控件
 */
 (function ($) {
     $.fn.iSelect = function (configs) {
         var configs = $.extend({}, $.fn.iSelect.defaults, configs || {});
         return this.each(function (index, element) {
             var myThis = this;
             var $this = $(this);

             var elId = $this.attr('name');
             if (elId == '' || typeof (elId) == 'undefined') {
                 elId = 's00' + index;
                 $this.attr('id', elId);
             }
             var $wrap = $('#iselect-' + elId);
             if ($wrap.length <= 0) {
                 $wrap = $('<span class="iselect" id="iselect-' + elId + '"><div class="old"></div><div class="text"></div><div class="dropdown"><ul></ul></div></span>');
                 $this.before($wrap);
                 $this.prependTo($wrap.find('.old'));
             }
             var $text = $wrap.find('.text');
             var $dropdown = $wrap.find('.dropdown');
             var width = $this.width();
             var allwidth = configs.width;
             if (allwidth == 'auto') {
                 allwidth =  width;
             }
             //$wrap.css({width:allwidth});
             $text.css({width:allwidth});
             $dropdown.css({width:allwidth + 2});
             var $list = $dropdown.find('ul');
             var html = '';
             var i = 0;
             var text = '';
             var value = '';
             var selected = false;
             var style = '';
             for (i = 0; i < myThis.options.length; i++) {
                 text = myThis.options[i].text;
                 value = myThis.options[i].value;
                 selected = myThis.options[i].selected;
                 if (selected) {
                     style = ' class="selected"';
                 } else
                     style = '';
                 html += '<li data-value="' + value + '"' + style + '><a href="javascript:;">' + text + '</a></li>';
             }
             $list.html(html);
             if (myThis.options.length>0) {
                 text = myThis.options[myThis.selectedIndex].text;
                 $text.html(text);
             }

             $dropdown.hide();
             $text.click(function (event) {
                 event.stopPropagation();
                 $dropdown.show();
             });
             $(document.body).click(function () {
                 $dropdown.hide();
             });
             var $items = $list.find('li');
             $items.click(function (event) {
                 var selectedIndex = $items.index($(this));
                 myThis.options[selectedIndex].selected = true;
                 $(myThis).change();
                 $text.html(myThis.options[myThis.selectedIndex].text);
                 $dropdown.hide();
             });
         });
     };
     $.fn.iSelect.defaults = {width:'auto'};
 })(jQuery);

样式

.iselect { position:relative; display:inline-block; zoom:; height:24px; line-height:24px; }
    .iselect .old { height:1px; overflow:hidden; }
    .iselect .text { height:24px; text-indent:5px; background:#fff url(images/iselect.png) no-repeat right center; border:solid 1px #d5d5d5; cursor:default; }
    .iselect .text:hover { border-color:#5999d0; background-image:url(images/iselect_hover.png); }
    .iselect .dropdown { position:absolute; left:; top:27px; z-index:; width:100%; height:auto; background:#fff;  }
    .iselect .dropdown ul { border:solid 1px #d5d5d5; max-height:360px; overflow:auto; }
    .iselect .dropdown li { cursor:pointer; }
    .iselect .dropdown li a { display:block; padding:0 5px;  }
    .iselect .dropdown li.selected a { background:#5999d0; color:#eee; }
    .iselect .dropdown a:hover { background:#eee; }

调用

$(function(){
    $('select').iSelect();
});

当前支持一个参数 width用来设置宽度，如果是动态更改下拉选项，在select上调用一次iSelect 即可