Referencing a .js (JavaScript) file from ASP.NET Content Page

I have seen developers adding a JavaScript reference to the Master Pages and then using the JavaScript functions in Content Pages. However, with this approach, the JavaScript is referenced in each page of the application using that MasterPage as its template. If you want to reference the JavaScript file only on one ContentPage, then here's how to do so:


protected void Page_Load(object sender, EventArgs e)


    Page.ClientScript.RegisterClientScriptInclude("onlyone", ResolveUrl(@"Scripts\SomeScript.js"));

    if (!Master.Page.ClientScript.IsStartupScriptRegistered("MS"))



            (this.GetType(), "MS", "SomeMethodJS();", true);




Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

    Page.ClientScript.RegisterClientScriptInclude("onlyone", ResolveUrl("Scripts\SomeScript.js"))

    If (Not Master.Page.ClientScript.IsStartupScriptRegistered("MS")) Then

        Master.Page.ClientScript.RegisterStartupScript(Me.GetType(), "MS", "SomeMethodJS();", True)

    End If

End Sub

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About The Author

Suprotim Agarwal
Suprotim Agarwal, ASP.NET Architecture MVP (Microsoft Most Valuable Professional) works as an Architect Consultant and provides consultancy on how to design and develop Web applications.

Suprotim is also the founder and primary contributor to DevCurry, DotNetCurry and SQLServerCurry. He is the Editor of a Developer Magazine called DNC Magazine. He has also written two EBooks 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook

Follow him on twitter @suprotimagarwal

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