How to call this javascript function from code behind

Question

I'm putting javascript created controls (http://www.dariancabot.com/projects/jgauge_wip/) on my page.

<div class="jgauge" ></div>

$(document).ready(function () {  
    var ctl; 
    ctl = new jGauge();   
    ctl.init();
)}

Let's say I need to pass few parameters to init. like... ctl.init(a, b); from code behind, how can I achieve that? I tried something like this...

string script2 = String.Format("init('{0}','{1}')", param1, param2);

this.Page.ClientScript.RegisterStartupScript(this.GetType(), "initialize control", script2, true);

But it's not working. I got:

ReferenceError: init is not defined

Habibillah · Accepted Answer · 2012-11-04 12:55:42Z

2

The init is a method inside jGauge instance. So you must instantiate before you call those mathode. Try bellow:

string script2 = String.Format("var ctl; ctl = new jGauge();  ctl.init('{0}','{1}');", param1, param2);
this.Page.ClientScript.RegisterStartupScript(this.GetType(), "initialize control", script2, true);

answered Nov 4, 2012 at 12:55

Habibillah

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Comments

Talha Ashfaque · Accepted Answer · 2012-11-05 08:31:02Z

0

one more way of doing it is to have public variables,

your script would be like:

$(document).ready(function () {  
    var ctl; 
    ctl = new jGauge();   
    ctl.init(<%=param1 %>, <%=param2 %>);
)}

and in code behind have two public strings

public string param1 = string.Empty;
public string param2 = string.Empty;

on your page_load or any other event, you can set value of these 2 variables normally, like:

param1 = "100";

rest of the code will work as it is.

answered Nov 5, 2012 at 8:31

Talha Ashfaque

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