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rahul
problem in selecting second arraylist from mysql database
4 Answer(s)      3 years and 8 months ago
Posted in : JavaScript Questions


Hi...everyone
Below i have attached my code. This code is working.....but i want some modification in that code such that when i select 'vegetable' or 'fruits', it should give list of that selected one in second list, BUT THAT list should be stored in mysql database. In the below program , i have hard-coded that second list, but i want second list to be dynamic from database.

Please, help me out.
Thank you for your help in advance

[code] <HTML>
<HEAD>
<SCRIPT LANGUAGE="JavaScript">


<BODY BGCOLOR=WHITE onLoad="setList(document.listsform)">

<FORM NAME="listsform">
<SELECT NAME="list1" onChange="setList(form)">
<OPTION>Fruit
<OPTION>Vegetables

<SELECT NAME="list2">
<OPTION>
<OPTION>
<OPTION>
<OPTION>
<OPTION>
<OPTION>
<OPTION>
<OPTION>
<OPTION>




[/code]


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December 20, 2010 at 12:49 PM


Hi Friend,

Try the following code:

1)select.jsp:

<html>
     <head>
     <script type="text/javascript">
     var xmlHttp;
function showState(str){
if (typeof XMLHttpRequest != "undefined"){
xmlHttp= new XMLHttpRequest();
}
else if (window.ActiveXObject){
xmlHttp= new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlHttp==null){
alert ("Browser does not support XMLHTTP Request")
return
} 
     var url="select2.jsp"
     url=url+"?fooditem="+str
     xmlHttp.onreadystatechange=stateChanged 
     xmlHttp.open("GET",url,true)
     xmlHttp.send(null)
     }

     function stateChanged(){ 

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


     function GetXmlHttpObject(){
     var xmlHttp=null;
     try{
     xmlHttp=new XMLHttpRequest();
     }
     catch (e) {
     try {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
     catch (e)  {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
     }
     }
     return xmlHttp;
     }
   </script>
   </head>
   <body>
   <form name="employee">
   <br><br>
     <b>Select Food Item</b>
      <select name="name" onchange="showState(this.value);">
     <option value="-1">Select</option> 
   <option value="fruit">Fruits</option>
   <option value="vegetable">Vegetables</option>
   </select>

   <div id='item'>
<b>Select Item          </b>  
<select name='item' >
<option value='-1'></option>
</select>
</div> 
   </form>    
   </body>
   </html>

2)select2.jsp:

<%@page language="java" import ="java.sql.*" %>
<%
String fi=request.getParameter("fooditem");
String buffer="<b>Select Item          </b>  <select><option value='-1'>Select Item</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 items where fooditem='"+fi+"' ");
while(rs.next()){
buffer=buffer+"<option value='"+rs.getString("item")+"'>"+rs.getString("item")+"</option>";
}
buffer=buffer+"</select>";
response.getWriter().println(buffer);
%>

3)For the above code, we have created following table:

CREATE TABLE `items` (                                    
          `id` bigint(255) NOT NULL auto_increment,               
          `fooditem` varchar(255) default NULL,                   
          `item` varchar(255) default NULL,                       
          PRIMARY KEY  (`id`)                                     
        )

Thanks



December 20, 2010 at 1:11 PM


Hey thank you very very much.....I want same answer which you have posted..Thanks a lot:-)



December 20, 2010 at 5:59 PM


in above code , please i want some modification.....i have tried my best ,but i didn't get.

I want to print checked checkbox on same page in another table. please, help me out

2)select2.jsp

print("code sample");

<%@page language="java" import ="java.sql.*" %> <% String fi=request.getParameter("fooditem"); String buffer="Select Item "+rs.getString("item")+""; } buffer=buffer+""; response.getWriter().println(buffer); %>



December 20, 2010 at 6:00 PM


print("code sample");



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