jquery easyui自动补全

	$("#A").combobox({
        valueField: 'a',
        textField: 'a',
        panelWidth: 200, 
        onChange:function(values,o){
			if(values != ""){
				var url = '${s.base}/a/autocomplete/logisticserName.json?name='+values.trim()+'&time='+new Date().getTime();
             	$("#A").combobox("reload",url); 
    		} 
        }, 
        onSelect:function(record){
			if(record != ""){
				$("#b").val(record.b);
			}
		}
    })
	<td><span class="input_must">*</span>发货人姓名</td>
	<td><input  name="A"  id="A" type="text"  class="easyui-combobox"/></td>

	<td><input  name="b"  id="b" type="text"  class="easyui-combobox"/></td>