How to pass values from javascript to server-side

[ratnakar_ravi]

How to pass values from javascript to server-side

[N a v a n e e t h]

Using a hidden input field.

Navaneeth How to use google | Ask smart questions

[ratnakar_ravi]

can u give an example

[Christian Graus]

1 - put a server hidden field in your page 2 - write the name of the field as a variable through to javascript, so you have the client side Id 3 - use document.getElementById to find the Id, and then set the value in JS 4 - on postback, read it from the hidden field.

Christian Graus Driven to the arms of OSX by Vista.

[N a v a n e e t h]

<input type="hidden" name="txtHidden" id="txtHidden" runat="server">
document.getElementById("txtHidden").value = "Set your value here"

You can use txtHidden.Text on server side to get the value. :)

Navaneeth How to use google | Ask smart questions

[Christian Graus]

runat=server won't change the id ? I see it's not a server control, but still, I did not know that.

Christian Graus Driven to the arms of OSX by Vista.

[N a v a n e e t h]

Christian Graus wrote:

runat=server won't change the id

It will, only if the control is in a container(like panel etc). In such cases, it prefixes the container id with the control id to make the name unique. In normal cases, it won't.

Navaneeth How to use google | Ask smart questions