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Editorial Team
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Asked: 2026-05-24T13:57:43+00:00

I am using sharepoint 2010 and developing a visual web part. I had javascript

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I am using sharepoint 2010 and developing a visual web part. I had javascript functions on the ascx file and they all used to work file.Now I have moved them to a single javascript.js file and deployed it to the _layouts folder on server.

And I have put the below line on the ascx file to reference to that file

<script src="/sites/xxxxx/_layouts/customwebparts/javascript.js" type="text/javascript"> </script>

and then on the ascx.cs file and I am using the methods defined in this file for eg.,

      btnCancel.Attributes.Add("onclick", "{return Action(Cancel the form?)};");

But it is not working, it is not displaying the confimration box …Am I referencing the wrong way. Please help me ….

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1 Answer

  1. Editorial Team

    To reference a javascript file from within a SharePoint Visual Web Part you need to use the SharePoint:ScriptLink tag (example below):

    <SharePoint:ScriptLink ID="<someid>" runat="server" Name="/_layouts/...<Path>"></SharePoint:ScriptLink>

    I add a layouts mapped folder to my Visual Web Part project and place a scripts folder within the default folder, which I believe is the projects name. Following this model ensures that the javascript file is always kept up-to-date during deployment. The ‘Name’ property in the above tag is just the path to the javascript file relative to _layouts, so something like “/_layouts/ProjectName/Scripts/myjavascript.js”.

    As an FYI if you want to use CSS as well there is a SharePoint:CssRegistration tag as well. I find these are the 2 that I use the most.

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