js代码：
var form = layui.form, layer = layui.layer;form.on("select(上级)", function(data){ var url = Const.apiUrl + "获取下级下拉框集合的Url"; View.get(url, "khlx=" + data.value, function(resp) { $("select[name='下级']").html(""); var html = ""; for (var i = 0; i < resp.length; i++) { html += ""; } $("select[name='下级']").append(html); // 刷新select选择框渲染 form.render(); }, function() { TmplUtils.showMsgFail(Locale.get("custRiskRateConfig.info.propFail")); });}); 参考：https://jingyan.baidu.com/article/afd8f4deafd30634e386e950.html