c# change value of javascript variable from code behind

Question

I have a variable named "tempVariable" in my jquery file. now I need to change its value from code behind in c#. What I have done till now is

in my C# code

public void changeValueInJquery()
{
    bool newVal = false;
    Page.ClientScript.RegisterClientScriptBlock(
        GetType(), 
        "key", "ChangeValue(" + newVal + ");", true);
 }

my jquery code is as

function ChangeValue(value1) {
    alert(value1);
    tempVariable = value1;
}

The issue is that ChangeValue() function never gets hit.

Am I going wrong somewhere?

There is nothing jQuery in this question. jQuery != Javascript — Jamiec
– Jamiec, Commented Mar 8, 2013 at 11:52
Another option is just take hidden variable and take its value in jQuery. You can change its value from code behind.. — Sachin
– Sachin, Commented Mar 8, 2013 at 11:55
jamiec: I have not posted my whole jquery file here.. The only function where I need changes is what is shown here.. — Gautam
– Gautam, Commented Mar 8, 2013 at 11:59
You're solution may well contain jQuery, but nothing about this question has anything whatsoever to do with jQuery. My solution might have HTML, CSS, C#, javascript and jQuery. If I have a c# question I wouldnt tag it jQuery. — Jamiec
– Jamiec, Commented Mar 8, 2013 at 12:02

Sachin · Accepted Answer · 2013-03-08 12:06:31Z

1

may be '...' is required to pass value...

Try this :

Page.RegisterStartupScript("changevalue", "<script>ChangeValue('" + newVal + "');</script>");

answered Mar 8, 2013 at 12:06

Sachin

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Comments

Coding Flow · Accepted Answer · 2013-03-08 11:58:17Z

1

I would check in a JS debugger to see if you are getting any errors.

But generally try using Page.ClientScript.RegisterStartupScript(); instead if you are calling functions already present in the page. This will ensure that the script block is rendered at the bottom of the page and not for example before the ChangeValue function.

As other people have mentioned, this is nothing to do with jQuery.

answered Mar 8, 2013 at 11:58

Coding Flow

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