jQuery EasyUI 为Combo,Combobox添加清除值功能

效果图： 图标 (function($){//初始化清除按钮functioninitClear(target){varjq=$(target);varopts=jq.data('combo').o

效果图：

 

图标

(function($){        //初始化清除按钮    function initClear(target){        var jq = $(target);        var opts = jq.data('combo').options;        var combo = jq.data('combo').combo;        var arrow = combo.find('span.combo-arrow');                var clear = arrow.siblings("span.combo-clear");        if(clear.size()==0){            //创建清除按钮。            clear = $('<span class="combo-clear" style="height: 20px;"></span>');                        //清除按钮添加悬停效果。            clear.unbind("mouseenter.combo mouseleave.combo").bind("mouseenter.combo mouseleave.combo",                function(event){                    var isEnter = event.type=="mouseenter";                    clear[isEnter ? 'addClass' : 'removeClass']("combo-clear-hover");                }            );            //清除按钮添加点击事件，清除当前选中值及隐藏选择面板。            clear.unbind("click.combo").bind("click.combo",function(){                jq.combo("setValue","").combo("setText","");                jq.combo('hidePanel');            });            arrow.before(clear);        };        var input = combo.find("input.combo-text");        input.outerWidth(input.outerWidth()-clear.outerWidth());                opts.initClear = true;//已进行清除按钮初始化。    }        //扩展easyui combo添加清除当前值。    var oldResize = $.fn.combo.methods.resize;    $.extend($.fn.combo.methods,{        initClear:function(jq){            return jq.each(function(){                 initClear(this);            });        },        resize:function(jq){            //调用默认combo resize方法。            var returnValue = oldResize.apply(this,arguments);            var opts = jq.data("combo").options;            if(opts.initClear){                jq.combo("initClear",jq);            }            return returnValue;        }    });}(jQuery));

html代码<select id="myselect" panelHeight="auto" style="width: 102px;" editable="true" name="itcast">        <option value="0">成都</option>        <option value="1">传智播客</option>        <option value="2">姚欣</option>        <option value="3">小星星</option></select>

js代码$('#myselect').combobox({	required : true,	editable : false}).combobox("initClear");

css样式.combo-clear {  background-color: #E0ECFF;  width: 18px;  height: 20px;  overflow: hidden;  display: inline-block;  vertical-align: top;  cursor: pointer;  opacity: 0.6;  filter: alpha(opacity=60);  background: url('images/combo_clear.png') no-repeat center center;}.combo-clear-hover {  opacity: 1.0;  filter: alpha(opacity=100);  background-color: #eaf2ff;}