set value in javascript variable from code behind

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Hi,

I want to set value in javascript variable from code behing, and i am using this

var SelectedItemNumber = '<%=SelectedItemNumberCount%>';

in this code SelectedItemNumberCount is a public variable in code and it is increment from a private function, but it is not working and always SelectedItemNumber variable shows 0th item.

Please help.
Thanks

Posted 8-Sep-15 20:35pm

Member 11449483

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Schatak 9-Sep-15 2:55am

you can use Hidden field for this.

F-ES Sitecore 9-Sep-15 5:04am

It will have the value that SelectedItemNumberCount had when the page was initially rendered so use breakpoints to check the order the code runs in, see if the property is rendered before your value is incremented. Remember that your .net code isn't running inside the browser, the html source is simply a snapshot from the page was rendered.

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Schatak · Accepted Answer · 2015-09-08T21:13:00

Use Hiddenfield and store the server variable value in it and get the value into the javascript.

On aspx

C#

<input type="hidden" id="myHiddenId" runat="server" />

In aspx.cs

C#

myHiddenId.Value = Severvariable

On Javascript

JavaScript

var JSVariableValue = document.getElementById('myHiddenId').value;