EasyUi的combobox使用方式

<select id="mySelect"></select>
$('#mySelect').combobox();

productData.map(item => {
        comboboxData.push({"id":item.staticDisplayValue,"text":item.staticDisplayValue,"desc": item.staticDisplayValue});
 });
$('#mySelect').combobox({
        width: 200,
        data:comboboxData,
        valueField: 'desc',
        textField: 'text'
 });

$('#mySelect').combobox({
        width: 200,
        data:comboboxData,
});