Passing variable from javascript to servlet!!!

[vinodsk101]

Hi all,
I have one doubt,
can we pass a variable from javascript to servlet???

In Brief,
i am getting some values in javascript through jsp and the same values i
want in servlet. Ya i know i can get this values in servlet by using request.getPara meter("");
But thise values are dynamically generated so i dont know how many values will be. so i am planning to put some array list so that i can forward this values to servlet.

but i can't get this array which is declared in javascript!! :( so any buddy can help me how to get this dynamically generated values in servlet!!!

Thanks in Advance!! :)

[r035198x]

You would get an array (or values in a select) using request.getPara meterValues instead.

[vinodsk101]

Hi,

But if i declare a array in javascript how can i get that array in servlet???
Is there any way to declare array in javascript/html and same we can use in servlet??

[r035198x]

You could just set the values to a hidden checkbox on the form and submit that.

[vinodsk101]

Hi,
Actually i have a dynamic table, i have add button to table which will add the new row to table, i want all the table values in servlet for my further use.
i used hidden select box,and i am adding all values to hidden selectbox, but problem is that i am getting only fist value, but if i give more than 2 or 3 rows, i am not receiving all values in servlet.

But if i use hidden checkbox how can i put all values in single checkbox value??

[r035198x]

The hidden select box approach should work as well. Post the code you used to populate the select.

[vinodsk101]

Hi,
I used this code to populate the select box.

var k;
    for(k=1; k<=lastRow; k++)
    {
         var newOption = new Option(); 
         var x=document.getElementById('selRow'+ k).selectedIndex;
    var y=document.getElementsByTagName("option");
 
    alert(y[x].text+" In for loop has the index of: "+y[x].index);         
 
    newOption.text = y[x].text;
    newOption.value = y[x].text;
    document.table.ListBox4.options[len2] = newOption;
    len2=len2+1;
 
    }

But some of the values are not inserting propertly!!

[acoder]

Line 6 (setting y) will cause problems because you're getting all the options in the document (which is increasing all the time in the loop). So put that statement outside the loop.