<select id="cc" class="easyui-combobox" name="dept" style="width:200px;">  <option value="aa">aitem1</option>  <option>bitem2</option>  <option>bitem3</option>  <option>ditem4</option>  <option>eitem5</option></select>

<input id="cc" class="easyui-combobox" name="dept"data-options="valueField:'id',textField:'text',url:'get_data.php'">

$('#cc').combobox({  url:'combobox_data.json',  valueField:'id',  textField:'text'});

[{  "id":1,  "text":"text1"},{  "id":2,  "text":"text2"},{  "id":3,  "text":"text3",  "selected":true},{  "id":4,  "text":"text4"},{  "id":5,  "text":"text5"}]

//初始化下拉列表function InitCombobox() {  $("#combobox_one").combobox({    onLoadSuccess: function(){      var types = $("#combobox_one").combobox('getData');      if (types.length > 0){         $("#combobox_one").combobox('select', types[0].Value); //全部      }    }  });  $("#combobox_two").combobox({     url:'...';    onLoadSuccess: function(){       var types = $("#combobox_one").combobox('getData');      if (types.length > 0){         $("#combobox_two").combobox('select', types[0].Value); //全部      }    },    onSelect: function(record){       var url = '...' + record.Value;      $("#combobox_one").combobox('reload', url);    }  });

 $(function() {  var typeData = [{    text: "來源",    value: "prodName"  }, {    text: "排放",    value: "ars"  }];  var options01 = [{    text: "生活污水",    value: "eq"  }, {    text: "工業用水",    value: "ne"  }];  var options02 = [{    text: "工業用水",    value: "ne"  }, {    text: "生活垃圾",    value: "ge"  }];  //初始化查詢項目的下拉列表  $("#type").combobox({    valueField: 'value',//值字段    textField: 'text',//顯示的字段    data: typeData,    panelHeight: 170,    onSelect: function() {      var myOptValue = $("#type").combobox("getValue");      //1.清空原來的classify這個combobox中的選項      $("#classify").combobox("clear");      //2.動態添加"操作類型"的下拉列表框的option                    if (myOptValue != null && (myOptValue == 'prodName' || myOptValue == 'prodStatus')) {        console.info("myOptValue = " + myOptValue);        $("#classify").combobox({          panelHeight: 50,          data: options01        });      } else {        $("#classify").combobox({          panelHeight: 140,          data: options02        });      }      //3.清空文本輸入框――用戶輸入的條件                    //$("#userInputCondition").val("");    }  });  //初始化classify的下拉列表  $("#classify").combobox({    valueField: 'value',    textField: 'text',    data: options02,    panelHeight: 140,  });});

var h = $(window).height() * 0.65;// 省級 $('#province').combobox({  valueField: 'name', //值字段  textField: 'name', //顯示的字段  url: '/TidewaySHPServer/area/findAllProvince',//url為java后臺查詢省級列表的方法地址  panelHeight: h,  editable: true,  //模糊查詢  filter: function(q, row) {    var opts = $(this).combobox('options');    return row[opts.textField].indexOf(q) == 0; //從頭匹配,改成>=即可在任意地方匹配  },  onSelect: function(rec) {    $('#city').combobox('setValue', "");    $('#county').combobox('setValue', "");    var url = '/TidewaySHPServer/area/findAllCity?parentId=' + rec.areaId;//url為java后臺查詢事級列表的方法地址    $('#city').combobox('reload', url);  }});//市區 $('#city').combobox({  valueField: 'name', //值字段  textField: 'name', //顯示的字段         panelHeight: 'auto',  editable: false, //不可編輯，只能選擇  value: '',  onSelect: function(rec) {    $('#county').combobox('setValue', "");    var url = '/TidewaySHPServer/area/findAllDistrictOrCounty?parentId=' + rec.areaId;//url為java后臺查詢區縣級列表的方法地址    $('#county').combobox('reload', url);  }});//區 縣$('#county').combobox({  valueField: 'areaId',  textField: 'name',  panelHeight: 'auto',  editable: false,});