Latest Tutorials| Questions and Answers|Ask Questions?|Site Map



Login         

View Questions and Answers by Category

Advertisements


 
Have Programming Question? Ask it here!
 
 
 


Ali
Dynamic form
1 Answer(s)      2 years and 3 months ago
Posted in : Java Beginners


I need to make a dynamic form using jsp for example, i will need a list of items which when we select one option another list is modified ( like 2 lists of countries and citys ), and also a radio button wich once clicked we have a new list created on the same form. Thanks for your help


Advertisement
View Answers

August 7, 2012 at 12:39 PM


Here is an application of jsp dependent dropdown where we have a dropdown list consisting of country names. When the user select any country name, the corresponding states will get displayed in another dropdown list.

1)country.jsp:

<%@page import="java.sql.*"%>
 <html>
      <head>  
      <script language="javascript" type="text/javascript">  
      var xmlHttp  
      var xmlHttp
      function showState(str){
      xmlHttp=GetXmlHttpObject();
      if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
      var url="state.jsp";
      url +="?count=" +str;
      xmlHttp.onreadystatechange = stateChange;
      xmlHttp.open("GET", url, true);
      xmlHttp.send(null);
      }

      function stateChange(){   
      if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){   
      document.getElementById("state").innerHTML=xmlHttp.responseText   
      }   
      }

function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 //Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}
      </script>  
      </head>  
      <body>  
      <select name='country' onchange="showState(this.value)">  
      <option value="none">Select</option>  
    <%
 Class.forName("com.mysql.jdbc.Driver").newInstance();  
 Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root");  
 Statement stmt = con.createStatement();  
 ResultSet rs = stmt.executeQuery("Select * from country");
 while(rs.next()){
     %>
      <option value="<%=rs.getString(1)%>"><%=rs.getString(2)%></option>  
      <%
 }
     %>
      </select>  
      <br>  
      <div id='state'>  
      <select name='state' >  
      <option value='-1'></option>  
      </select>  
      </div>  
      </body> 
      </html>

2)state.jsp:

 <%@page import="java.sql.*"%>
<%
String country=request.getParameter("count");  
 String buffer="<select name='state' ><option value='-1'>Select</option>";  
 try{
 Class.forName("com.mysql.jdbc.Driver").newInstance();  
 Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root");  
 Statement stmt = con.createStatement();  
 ResultSet rs = stmt.executeQuery("Select * from state where countryid='"+country+"' ");  
   while(rs.next()){
   buffer=buffer+"<option value='"+rs.getString(1)+"'>"+rs.getString(3)+"</option>";  
   }  
 buffer=buffer+"</select>";  
 response.getWriter().println(buffer); 
 }
 catch(Exception e){
     System.out.println(e);
 }

 %>

For the above code, we have created two database tables:

CREATE TABLE `country` (                                 
           `countryid` bigint(255) NOT NULL auto_increment,       
           `countryname` varchar(255) default NULL,               
           PRIMARY KEY  (`countryid`));  



CREATE TABLE `state` (                                   
          `stateid` bigint(255) NOT NULL auto_increment,         
          `countryid` int(255) default NULL,                     
          `state` varchar(255) default NULL,                     
          PRIMARY KEY  (`stateid`));


Related Tutorials/Questions & Answers:
Dynamic form
Dynamic form  I need to make a dynamic form using jsp for example, i will need a list of items which when we select one option another list... clicked we have a new list created on the same form. Thanks for your help  
dynamic form
dynamic form  I need to make a dynamic form using php, for example, i... button wich once clicked we have a new list created on the same form. Thank you...); } } </script> <form method="post" action="" name="form1"> <
Advertisements
Play framework dynamic form generation
Play framework dynamic form generation  I want to generate dynamic forms using play framework can any one give me some idea about dynamic form generation using play framework
DYNAMIC BINDING
DYNAMIC BINDING  WHAT IS DYNAMIC BINDING
form
form   Can I prevent a form from being submitted again
dynamic report
dynamic report  i need complete code for generating dynamic report in jsp
dynamic polymorphism
dynamic polymorphism  Develop with suitable hierarchy, classes for Point, Shape, Rectangle, Square, Circle, Ellipse, Triangle, Polygon, etc. Design a simple test application to demonstrate dynamic polymorphism
Dynamic keyword
Dynamic keyword  hi....... What is the dynamic keyword used for in flex? give me the answer ASAP Thanks  Ans: Dynamic keyword-> Specifies that instances of a class may possess dynamic properties added
dynamic polymorphism
dynamic polymorphism  give an example for dynamic polymorphism?   Dynamic polymorphism is where a class overrides a superclass method... seen at runtime, so they are considered dynamic. Here is an example
dynamic textfields
dynamic textfields  Hi, I am a fresher and joined recently in one company. they gave me a desktop application project using swings.here is my detailed spec Screen 1 - The user enters the ingredients from a food product, saves
dynamic jquery statement
dynamic jquery statement  dynamic jquery statement
dynamic calender
dynamic calender  hi i need the code to "insert date using GUI"   Hi Friend, Try the following code: import java.awt.*; import java.awt.event.*; import javax.swing.*; class DatePicker{ int month
dynamic query
dynamic query  DECLARE QUERY VARCHAR2(32767); FIN_QUERY VARCHAR2(32767); CURSOR C IS (select distinct PORTFOLIO from MPE_TEST1); CURSOR C2 IS SELECT DISTINCT PORTFOLIO_LEVEL, PORTFOLIO FROM MPE_TEST1 ORDER
dynamic select box
dynamic select box  hello friends i created a form and details of city & locations have to be come from database. if city hyderabad chosen then locations of hyderabad only appear in location selectbox.plz send code it is more
create dynamic array in javascript
create dynamic array in javascript  How to create dynamic array in javascript
php dynamic array checking
php dynamic array checking  php dynamic array checking
php dynamic array checking
php dynamic array checking  php dynamic array checking
PHP Dynamic CheckBox
PHP Dynamic CheckBox  Help with Dynamic Checkbox in PHP
Dynamic include jsp
Dynamic include jsp  I need dynamic include jsp page with an example
static page and dynamic pages?
static page and dynamic pages?  what is the static page and dynamic pages
static page and dynamic pages?
static page and dynamic pages?  what is the static page and dynamic pages adv and disadv
dynamic web pages in html
dynamic web pages in html  How to create Dynamic web pages in HTML
how to add dynamic data
how to add dynamic data  how to add dynamic data to an existing web application
static page and dynamic pages?
static page and dynamic pages?  what is the diff between static page and dynamic pages
dynamic display - JSP-Servlet
dynamic display  hi, i want to display dynamic values in drop drown box in a jsp page.these values are in the form of arraylist's object which came form another servlet or bussiness logic after being validated
dynamic image change javascript
dynamic image change javascript  How to display images in JavaScript dynamically
Dynamic Array iPhone
Dynamic Array iPhone  Dynamic Array iPhone How can i add NSMutable array dynamically into my iPhone App
Dynamic check box problem
Dynamic check box problem  In my project i have used a dynamic table... dynamically]. Now my problem is that i can't access those values from that dynamic...: <%@ page import="java.sql.*" %> <html> <form name="form
Dynamic Polymorphism - Java Beginners
Dynamic Polymorphism  Develop with suitable hierarchy, classes for Point, Shape, Rectangle, Square, Circle, Ellipse, Triangle, Polygon, etc. Design a simple test application to demonstrate dynamic polymorphism.? Thanks
Dynamic polymorphism - Java Beginners
Dynamic polymorphism  Develop with suitable hierarchy, classes for point, shape, rectangele, square, circle,ellipse, triangle, polygon, etc. Design a simple test application to demonstrate dynamic polymorphism.. Thanks
Dynamic html examples
Dynamic html examples  Hi, What is Dynamic HTML? Explain with dynamic html examples. Thanks   Hi, DHTML stands for Dynamic HTML and is uses the HTML, JavaScript, DOM, & CSS in a program. Following is very simple
Advertisements
 

 

 

DMCA.com