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;}

以上这篇jQuery EasyUI 为Combo,Combobox添加清除值功能的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。