how to send a data from codebehind to javascript file?

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I want to do like that.there is a playlist database table in mysql database.it has title,artist,mp3 url column.
I want to take these urls from code behind from database and will send javascript file so dynamically will be.

my javascript file like that

C#

var myPlaylist = [

    {
        mp3:'http://3.s3.envato.com/files/10407161/preview.mp3', hereeeeeeee
        oga:'music/5.ogg',
        title:'Missing You', hereeeee
        artist:'Dejans', hereeeeeee
        rating:5,
        buy:'#',
        price:'17',
        duration:'5:25',
        cover:'music/180x180.jpg'
    },
    {
        mp3:'http://3.s3.envato.com/files/54178721/preview.mp3', hereeee
        oga:'music/4.ogg',
        title:'Midnight In Tokyo', hereeeee
        artist:'BlueFoxMusic', hereeeee
        rating:4,
        buy:'#',
        price:'17',
        duration:'2:51',
        cover:'music/180x180.jpg'
    },

I want to send from codebehind mp3:'xxxxxxxx.mp3'
title:'yyyyyy'
to this javascript file
how can I do?

Posted 9-Jul-14 11:30am

Member-2338430

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Comments

Sergey Alexandrovich Kryukov 9-Jul-14 17:38pm

This is not how it works. Javascript file is loaded when code behind is already finished its job. You need a postback, so you could generate new Javascript with new data.
—SA

Member-2338430 9-Jul-14 17:43pm

this is Pass C# ASP.NET array to Javascript array topic????? because javascript array

Sergey Alexandrovich Kryukov 9-Jul-14 19:00pm

You don't "pass" anything; you can only generate appropriate Javascript, with variable content...
—SA

Member-2338430 9-Jul-14 17:47pm

can I do like that
page load

get datas from database titles artists urlss
protected void Page_Load(object sender, EventArgs e)
{
string[] serverSideArray = { "One", "Two", "Three", };

string arrayString = string.Empty;

for (int i = 0; i < serverSideArray.Length; i++)
{
if (arrayString.Length > 0)
arrayString += ",";

arrayString += string.Format("new String('{0}')", serverSideArray[i]);
}

// arrayString = "new String('One'),new String('Two'), ...etc";
this.ClientScript.RegisterArrayDeclaration("g_clientSideArray", arrayString);
}

Member-2338430 9-Jul-14 17:56pm

I understood your commends how can update js file inside content???

Sergey Alexandrovich Kryukov 9-Jul-14 19:03pm

You cannot update anything, it is already on the client side. You can generate new one. Yes, possibly with RegisterArrayDeclaration, or anyhow with ClientScripManager.
Only you should understand that you are not "sending" anything, not "modifying" anything.
—SA

Member-2338430 10-Jul-14 2:45am

ok thanks

Member-2338430 9-Jul-14 18:02pm

I think this is my solution what can you say???
TextBox tb = (TextBox)Master.FindControl("txtMaster");
string val = tb.ClientID;
string script = @"<script>
function PopulateMaster() {
document.getElementById('" + val + @"').value = 'Via Content Page. Love dotnetcurry';
}
PopulateMaster();
</script>";
if (!Page.ClientScript.IsStartupScriptRegistered("Mast"))
{
Page.ClientScript.RegisterStartupScript(this.GetType(),
"Mast", script);
}
I will create from codebehind these js file concent

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Chintan Desai1988 · Answer 1 · 2014-07-09T21:31:00

If any one wants to be pass data from code behind to javascript then use WebMethod and PageMethod which normaly working as like core ajax when we have to create webmethod at code behind with return type as writen bellow code:

1. Call Web Method in Javascript using PageMethod technique:

Code Behind Page:
-----------------------------------------------------------
step 1: Create one Web Method in code behind page

[WebMethod]
public static int GetValue()
{
int no=10;
return no;
}

step 2: Create javascript function for call web method using PageMethod technique

function GetCodeBehind_Value()
{
PageMethods.GetValue(onsucess,onerror);
}

// These both method is normally used to handling javascript GetCodeBehind_Value() method which is return result value of "onsucess(result)" method if method is sucessfully called other then return value of "onerror(result)" method.
function onsucess(result)
{
alert(result);
}

function onerror(result)
{
alert(result);
}

Note: Plz use ScriptManage and enamblepageload method true.

XML

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
   </asp:ScriptManager>

I hope it will help you....... :-)