From Code behind I want to call JavaScript function and pass the value

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Dear Friends,

From Code behind I want to call JavaScript function and pass the value
I have written a code in code behind as follows
Code Behind:

C#

Disp=Disp+"<img src="path"  önClick="fun_Call_JavaScript("+str_val+")">"

str_val is retrieved from query.

From Code behind I want to call JavaScript function and pass the value(str_val)

JavaScript

function fun_Call_JavaScript(a)
{
alert(a)
}

But it gives a error as undefined.
Kindly suggest, how to get the value.

Posted 14-Sep-12 3:35am

Updated 14-Sep-12 3:39am

Malli_S

v2

3 solutions

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Kuthuparakkal · Answer 1 · 2012-09-14T03:43:00

Look at the standard way of doing this:
Register Client script in ASP.NET[^]

Posted 14-Sep-12 3:43am

ShotDriller · Answer 2 · 2012-09-14T03:48:00

This should do the job:

Page.RegisterStartupScript("starScript", "fun_Call_JavaScript('" + a + "');");

Posted 14-Sep-12 3:48am

Comments

Arunprasath Natarajan 14-Sep-12 10:01am

If suppose a value is "I_Got_Value". The error message shows as

Webpage error details
Message: 'I_Got_Value' is undefined

BobJanova 14-Sep-12 11:55am

Are you sure you included all the quotes in this example? Including those single ones in the string around a?

Arunprasath Natarajan 15-Sep-12 2:31am

Yeah, Its working for int but not for string

Sandeep Mewara · Answer 3 · 2012-09-14T03:50:00

using:
MSDN: RegisterClientScriptBlock Method[^] OR
MSDN: RegisterStartupScript Method[^]

Using them, you can inject the scripts into a page from server side and based on certain condition (and specific to page.)
For samples on how to use it: How to Use RegisterClientScriptBlock & RegisterStartupScript[^]
Inject javascript from server - Sample[^]