var select = 'dd[lay-value=' + cust_id + ']';// 设置value
$("select[name='cust_iddl",window.parent.document).siblings("div.layui-form-select").find('dl').find(select).click();// 查找点击
<tr onclick="tr('${customer_visit_plan.bh}','${customer_visit_plan.cust_id}','${customer_visit_plan.visitor_id}','<fmt:formatDate value="${customer_visit_plan.visit_start_date}" pattern="yyyy-MM-dd HH:mm"/>','<fmt:formatDate value="${customer_visit_plan.visit_end_date}" pattern="yyyy-MM-dd HH:mm"/>','${customer_visit_plan.visit_content}')">