HTML:
<select class="form-control input-sm" name="category" lay-filter="category" aria-invalid="false">
<option value="0">请选择运维位置</option>
</select>
js:
var category = 0;
var categoryName = '';
form.on('select(category)', function (data) {
category = data.value;
categoryName = data.elem[data.elem.selectedIndex].text;
form.render('select');
});