html select 添加事件无效,jquery触发select的change事件失效的问题解决

仰翰采
2023-12-01

jquery在页面第二次加载的时候触发不了下拉框的change事件,启动tomcat,地址栏输入localhost:8080/aa/list.jsp时能够触发下拉框的change事件,但是从servlet过来后就不起作用了,怎么回事?

pageEncoding="UTF-8"%>

信息界面

$(document).ready(function(){

$("#sel_emp").live('change',function(){

var value = $('#sel_emp').val();

alert(value);

window.location = "/aa/servlet/Test1Servlet";

});

});

编号

姓名

编号姓名
${element.uid }${element.username }

------------------------servletprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

Employee employee_01 = new Employee();

employee_01.setUid("1");

employee_01.setUsername("张三");

Employee employee_02 = new Employee();

employee_02.setUid("2");

employee_02.setUsername("李四");

List list = new ArrayList();

list.add(employee_01);

list.add(employee_02);

request.setAttribute("list", list);

request.getRequestDispatcher("/list.jsp").forward(request, response);

问题补充:

你是指,在从servlet 跳转至该页面后,点击下拉菜单,选择一个值的时候,不会触发这下面这个:

引用# function(){

#

# $("#sel_emp").live('change',function(){

# var value = $('#sel_emp').val();

# alert(value);

# window.location = "/aa/servlet/Test1Servlet";

# }

是么?

是的

问题补充:

你是指,在从servlet 跳转至该页面后,点击下拉菜单,选择一个值的时候,不会触发这下面这个:

引用# function(){

#

# $("#sel_emp").live('change',function(){

# var value = $('#sel_emp').val();

# alert(value);

# window.location = "/aa/servlet/Test1Servlet";

# }

是么?

是的

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