How to pass the checkbox value in javascript

12 New Member

Hi all,
I am retrieving some rows from DataBase using for loop in jsp and displaying it in a table format.In the output table I am also adding one more text box and checkbok with each row. In text box i have to enter some value manually and when i check its corresponding checkbox the value should get passes into another jsp.
This is a code by which i am assigning the name to textboxes and checkboxes

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 String[] arr_TextValues = new String[10];

String[] arr_ChkValues = new String[10]; 
 
arr_TextValues[i] = "Text"+i;

arr_ChkValues[i] = "Chk"+i;

where i = number of rows retrieved.

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 <td><input type=text name=<%=arr_TextValues[i]%> value=""/></td>

<td><input type="checkbox" name=<%=arr_ChkValues[i]%> VALUE="0" align ="center" ></td> .

Now to check and get the value of the textbox i am checking the checkbox value using javascript as :-

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 function check()

    { 

                for(l=0;l< i;l++){
 
 if(document.form1.chk0.checked ==true)

        {
 
               something to retrieve the value of textbox and pass it to another jsp!!!           
 
               }

}

how can i retrieve the value of the various checkboxex and pass it to another jsp?
any help regarding how to do this will be appriciated .

May 22 '08 #1

Subscribe Reply

19096

akshay01

New Member

Hi all,
I have to check the value of the 10 checkboxes using javascript, does anyone khow how to do this ?? i am using the code :

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 function check()

    { 

         for(i=0;i< 10 ;i++){
 
        if(document.form1.chki.checked ==true)

        {

          alert("hi");

                }

   }
 
}

but it is now taking the value of "i" in (document.form1 .chki.checked ==true).
Thanks in advance .

May 22 '08 #2

acoder

16,027

Recognized Expert Moderator MVP

Welcome to Bytes.

To take the i value to use for the name of the checkbox, use the elements array:

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document.form1.elements["chk"+i].checked...

PS. merged threads.

May 22 '08 #3

akshay01

New Member

Thanks for your reply !

The problem is still not solved, it is giving me some error

'document.form1 .elements[...].checked' is nill or not an object

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function check()
 
    { 

        no_of_row = document.form1.dev.value 
 
          for(l=0;l<no_of_row;l++)
 
          {

           if(document.form1.elements["Chk"+l].checked ==true)

           {
 
             var v=document.form1.elements[l].value;

                  alert(v);
 
             return true;
 
           }
 
           else
 
           {
 
          alert('Please check the assign token');

               return false;

           } 
 
    }
 
  }

please suggest me what to do now .

May 22 '08 #4

acoder

16,027

Recognized Expert Moderator MVP

A checkbox name can be a set of checkboxes. If you want to refer to one checkbox, you may be better off using an id, e.g.
[html]<input type="checkbox" name="Chk0" id="Chk0">[/html]and then using document.getEle mentById("Chk0" ) to access it.

May 22 '08 #5

akshay01

New Member

Thanks again!
The complication in my code is that when i fetch rows i am associating a checkbok and textbox with every row ..
now to access the data of the text box whic i enter manually i have to assign unique names to both checkbok and textbox.
please have a look into the code .

in this code i have to fetch the value of the text box if its corresponding checkbox is checked.

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<%@ include file="Connection1.jsp" %>

<HTML>

  <HEAD>
 
        <!-- Comments : To include style sheet </link> tag is used -->

        <link rel="stylesheet" type="text/css" href="commonstyle.css" >
 
      <TITLE> report </TITLE>

  <script language=javascript>
 
    function check()
 
    { 
 
           no_of_row = document.form1.dev.value 
 
          //  alert(no_of_row);
 
           for(l=0;l<no_of_row;l++)
 
          {
 
           if(document.form1.elements["Chk"+l].checked ==true)

           {
 
             var v=document.form1.elements[l].value;

          alert(v);
 
             return true;
 
           }
 
           else
 
           {
 
          alert('Please check the assign token');

               return false;

           } 
 
    }
 
  }

  </script>
 
  </HEAD>

  <BODY>

<% 

try

{

         com.aspace.ftress.interfaces.ejb.impl.BIAuthenticator ftressAuthenticator = soapFactory.getAuthenticatorEJB();

         com.aspace.ftress.interfaces.ejb.impl.BIUserManager ftressUserManager = soapFactory.getUserManagerEJB();
 
             //Defining the attribute search criteria. This is the input parameter for userSearchCriteria

             Attribute[] att_SearchCriteria = new Attribute[1];

             att_SearchCriteria[0] = new Attribute();

             att_SearchCriteria[0].setTypeCode(new AttributeTypeCode("GID"));

             att_SearchCriteria[0].setValue("infy");
 
             //Defining the user search criteria. This is the input parameter for the searchUser method

             UserSearchCriteria userSearchCriteria = new UserSearchCriteria();

             userSearchCriteria.setAttributeCriteria(att_SearchCriteria);
 
             //searchUser method returns all users matching the UserSearchCriteria.

             UserSearchResults userSearchResults =  new UserSearchResults();

             userSearchResults = ftressUserManager.searchUsers(alsi,channelCode,userSearchCriteria, domain);
 
             //Retrieving the users from the userSearchResults object.

             User[] user_Arr = userSearchResults.getUsers();

             int user_ArrLen = user_Arr.length;
 
             //Displaying the user attributes - START

             //Iterating through each user object in order to access User Attributes.

             String userCode = null;

             Attribute[] user_AttArray = new Attribute[10];

             boolean flag=true;

             boolean flag1=true;

             int i=0;
 
             %>
 
             <form name="form1" action="test.jsp" onSubmit=" return check()">

             <table border=8 width="50% height="80%" align="center">
 
                    <tr><td colspan="9" align= "center"><h2>USER SEARCH </h2></td></tr>

             <td>EXTID</td>
 
                <%
 
             String[] arr_TextValues = new String[10];
 
             String[] arr_ChkValues = new String[10];
 
             for (i=0; i<user_ArrLen; i++ ) {
 
             userCode = (user_Arr[i].getCode()).getCode();
 
             //Accessing attributes of the User
 
             user_AttArray = user_Arr[i].getAttributes();
 
              if(flag==true)
 
              for(int k=0;k<user_AttArray.length;k++){
 
                 %>
 
             <td><%=(user_AttArray[k].getTypeCode()).getCode() %>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td>
 
                        <%

                             flag=false;

                         }
 
                        if(flag1==true){
 
                        %>
 
             <td>Token Serial No.</td>

                    <td>Assign Token</td>
 
             </tr>
 
             <%flag1=false;

             }

             %>

                 <tr>
 
              <td><%=userCode%></td>
 
             <%
 
             //Iterating to access the value of each user attribute
 
               for (int j=0;j<user_AttArray.length;j++){

               %>

               <td><%=(user_AttArray[j].getValue())%></td>
 
               <%
 
                 }
 
               %>

                 <% 
 
                   arr_TextValues[i] = "Text"+i;

                   arr_ChkValues[i] = "Chk"+i;

                   out.println(arr_TextValues[i]);

                   out.println(arr_ChkValues[i]);
 
                 %>
 
               <td><input type=text id=<%=arr_TextValues[i]%> value=""/></td>
 
                  <td><input type="checkbox" id=<%=arr_TextValues[i]%> VALUE="0" align ="center" ></td> 
 
                  <%

             }

             %>

             <%

             String str_no_of_elements = Integer.toString(i);
 
            //out.println(str_no_of_elements);
 
            session.setAttribute("str_no", str_no_of_elements);
 
             %>
 
             <tr><td colspan="9" align = "center"><input type=button name=reg value="Submit" onClick=check() >

            <input type=button name=reg1 value="Cancel" align = "center"  >

            <input type=hidden name=dev value="<%=str_no_of_elements%>"</td></tr>

                </form>

             <%
 
             //Displaying the user attributes - END
 
         //Logging out the ALSI object

         //ftressAuthenticator.logout(response.getAlsi(), channelCode, domain);
 
         //Exception Handling
 
                } catch(com.aspace.ftress.interfaces.ftress.DTO.exception.ObjectNotFoundException e) {

             e.printStackTrace();

         } catch(javax.naming.NamingException e) {

             e.printStackTrace();

         } catch(javax.ejb.CreateException e) {

             e.printStackTrace();

         } catch(java.rmi.RemoteException e) {

             e.printStackTrace();

         } catch(java.net.MalformedURLException e) {

             e.printStackTrace();

         } catch(javax.xml.rpc.ServiceException e) {

             e.printStackTrace();

         } catch(Exception e) {

             e.printStackTrace();

         }
 
    %>
 
</table>

</BODY>

</HTML>

I will be thankful if you can help me out .

May 22 '08 #6

acoder

16,027

Recognized Expert Moderator MVP

Now that you've set the ID, the following should work:

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 for(l=0;l<no_of_row;l++) {

    if (document.getElementById("Chk"+l).checked) {

        var v = document.getElementById("Text"+l).value;

        // v now contains the text box value

May 22 '08 #7

akshay01

New Member

Hi a have come up with the following code :
i am now storing the name value of checkbox into a variable and passing it in

Expand|Select|Wrap|Line Numbers

document.form1.chk.checked ==true

but it is not taking the value of var . could you please tell me how to do this ?

Expand|Select|Wrap|Line Numbers

 
function check()
 
    { 
 
           no_of_row = document.form1.dev.value 
 
          //  alert(no_of_row);
 
           for(l=0;l<no_of_row;l++)
 
          {
 
           var txt="Text"+l; alert(txt);

           var chk="Chk"+l; alert(chk);}
 
      if(document.form1.chk.checked ==true)

           {
 
             var v=document.form1.txt.value;

          if(v!="")

          alert(v);

          else

          alert("Please enter id");
 
             return true;
 
           }
 
           else
 
           {
 
          alert('Please check the assign token');

               return false;

           } 
 
    } 
 
  }

thanks!

May 23 '08 #8

akshay01

New Member

Hi all,
I have to pass the value of a variable into the following code :-

Expand|Select|Wrap|Line Numbers

 
function check()
 
    { 
 
           no_of_row = document.form1.dev.value 
 
          //  alert(no_of_row);
 
           for(l=0;l<no_of_row;l++)
 
          {
 
           var txt="Text"+l; 

           var chk="Chk"+l;

}
 
      if(document.form1.chk.checked ==true)

           {
 
             var v=document.form1.txt.value;

          if(v!="")

          alert(v);

          else

          alert("Please enter id");
 
             return true;
 
           }
 
           else
 
           {
 
          alert('Please check the assign token');

               return false;

           } 
 
    } 
 
  }

There is an error that

Expand|Select|Wrap|Line Numbers

document.form1.chk.checked ==true

is null or not an object.
this means it is not taking the value of the variable "chk". does anyone know how to pass the value of var into

Expand|Select|Wrap|Line Numbers

document.form1.chk.checked ==true

Any help in this regard will be appriciated .
thanks!

May 23 '08 #9

hsriat

1,654

Recognized Expert Top Contributor

Can you show the HTML part, the one you get from view source?

May 23 '08 #10

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