ListItems added using Js gets cleared on Page load?

[sudhaMurugesan]

Hi ALL,
I am binding ListItems to dropdownlist using js.But the selected value is not retained while save operation. Do I need to capture the selected Item in any hiddenfields ?
plz tell me

Sudha

[dmjpro]

Hi ALL,
I am binding ListItems to dropdownlist using js.But the selected value is not retained while save operation. Do I need to capture the selected Item in any hiddenfields ?
plz tell me

Sudha

Your save operation gets processed properly or it stops to do that?
Let me know.
I think when you submit the page then according to browser settings this happnes.
I think it should not harm your page submitting.

Debasis Jana

[sudhaMurugesan]

Your save operation gets processed properly or it stops to do that?
Let me know.
I think when you submit the page then according to browser settings this happnes.
I think it should not harm your page submitting.

Debasis Jana

This is my Code. I dont know why this is happening its due to Ajax or due to any wrong with my code

function Major()
{
var deg = document.getElementById ("ctl00_ContentPlaceHolder1_ddlDegree");
 
 if(deg.selectedIndex != 0)
    {
    AjaxWebService.GetMajor(deg.options[deg.selectedIndex].value,OnGetMajor);       
    }
 
}
function OnGetMajor(Items)
{
 
var major = document.getElementById ("ctl00_ContentPlaceHolder1_ddlMajor");
if(major.options.length > 0)
{
major.options.length = 0;// to remove previously binded items
}
var o = document.createElement("option");
o.text = "----Select----";
o.value = 0;
major.add(o);
for(i=0;i<Items.length;i++)
{
var options = Items[i].split(",");
var o = document.createElement("option");
o.text = options[1];
o.value = options[0];
major.add(o);
}
}

Can you find out?

[sudhaMurugesan]

Your save operation gets processed properly or it stops to do that?
Let me know.
I think when you submit the page then according to browser settings this happnes.
I think it should not harm your page submitting.

Debasis Jana

I have kept these fields mandatory and only if these listitems are not null it will get saved. But the listitems are getting cleared during page load.

[dmjpro]

This is my Code. I dont know why this is happening its due to Ajax or due to any wrong with my code

function Major()
{
var deg = document.getElementById ("ctl00_ContentPlaceHolder1_ddlDegree");
 
 if(deg.selectedIndex != 0)
    {
    AjaxWebService.GetMajor(deg.options[deg.selectedIndex].value,OnGetMajor);       
    }
 
}
function OnGetMajor(Items)
{
 
var major = document.getElementById ("ctl00_ContentPlaceHolder1_ddlMajor");
if(major.options.length > 0)
{
major.options.length = 0;// to remove previously binded items
}
var o = document.createElement("option");
o.text = "----Select----";
o.value = 0;
major.add(o);
for(i=0;i<Items.length;i++)
{
var options = Items[i].split(",");
var o = document.createElement("option");
o.text = options[1];
o.value = options[0];
major.add(o);
}
}

Can you find out?

At which point your Ajax Call made and where your "Select Box" gets cleared?
Let me know ... Quick!

Debasis Jana

[dmjpro]

I have kept these fields mandatory and only if these listitems are not null it will get saved. But the listitems are getting cleared during page load.

What do you mean by "Page Load"?
What is your sever side Script?

Debasis Jana

[sudhaMurugesan]

At which point your Ajax Call made and where your "Select Box" gets cleared?
Let me know ... Quick!

Debasis Jana

onchange event of degree, i have called the js.In that code only i'm calling ajax;
But i trying to find where actually listitems is getting cleared

[dmjpro]

onchange event of degree, i have called the js.In that code only i'm calling ajax;
But i trying to find where actually listitems is getting cleared

If you are using J2EE container ...... then you can post your whole code.
Means the the "Server Side Script" and the JavaScript File.
So that I can do test.
Or you can send me your generated HTML file.
Your Client Side Script is HTML or something else?

Debasis Jana

[sudhaMurugesan]

If you are using J2EE container ...... then you can post your whole code.
Means the the "Server Side Script" and the JavaScript File.
So that I can do test.
Or you can send me your generated HTML file.
Your Client Side Script is HTML or something else?

Debasis Jana

Its ASP.net. I am doubting In this part of the code.

function Major()
{
var deg = document.getElementById ("ctl00_ContentPlaceHolder1_ddlDegree");
 
 if(deg.selectedIndex != 0)
    {
    AjaxWebService.GetMajor(deg.options[deg.selectedIndex].value,OnGetMajor);       
    }
 
}
function OnGetMajor(Items)
{
 
var major = document.getElementById ("ctl00_ContentPlaceHolder1_ddlMajor");
 if(major.options.length > 0)
{
major.options.length = 0;// to remove previously binded items
}
var o = document.createElement("option");
o.text = "----Select----";
o.value = 0;
major.add(o);
for(i=0;i<Items.length;i++)
{
var options = Items[i].split(",");
var o = document.createElement("option");
o.text = options[1];
o.value = options[0];
major.add(o);
}
}

[dmjpro]

Its ASP.net. I am doubting In this part of the code.

function Major()
{
var deg = document.getElementById ("ctl00_ContentPlaceHolder1_ddlDegree");
 
 if(deg.selectedIndex != 0)
    {
    AjaxWebService.GetMajor(deg.options[deg.selectedIndex].value,OnGetMajor);       
    }
 
}
function OnGetMajor(Items)
{
 
var major = document.getElementById ("ctl00_ContentPlaceHolder1_ddlMajor");
 if(major.options.length > 0)
{
major.options.length = 0;// to remove previously binded items
}
var o = document.createElement("option");
o.text = "----Select----";
o.value = 0;
major.add(o);
for(i=0;i<Items.length;i++)
{
var options = Items[i].split(",");
var o = document.createElement("option");
o.text = options[1];
o.value = options[0];
major.add(o);
}
}

Ok let me understand your code.
You have two "Select Box"s ..... "onchange" event of "degree" the major gets cleared and refilled with new one, what you get from Server Side.
This is what happening.
Up to this I am right ?
Now tell me what is being cleared?
Here I am not getting your Point.

Debasis Jana.