I'm using ASP.NET with a master page containing a script manager. I want to add a javascript file to only one page, but all pages inherit from the master. What is the proper way to accomplish this?
thanks in advance
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5 Answers
Add a script manager proxy to the page you wish to add the javascript to and then add the javascript reference using the script manager proxy
1 Comment
Zhaph - Ben Duguid
Assuming they are using ASP.NET 3.5, this is the way I'd go.
In the Master Page add a content container in the HEAD section, in your page put the Javascript tag inside the instance of that container.
EDIT - for d03boy
On MasterPage:
<head runat="server">
<asp:ContentPlaceHolder ID="HeadContent" runat="server" />
</head>
On ContentPage:
<asp:Content ID="LocalHeadContent" ContentPlaceHolderID="HeadContent" runat="server">
<script type="javascript" \>
</asp:Content>
For any content page that doesn't have something to include in the page header there's no need to even create the Content tag.
1 Comment
Joe Phillips
This is really the best solution? What if he has 500 pages attached to that Master page and only 1 of them needs the javascript.
Can you just use the ClientScriptManager?
if (!Page.ClientScript.IsClientScriptIncludeRegistered("MyKey"))
{
Page.ClientScript.RegisterClientScriptInclude("MyKey", "~/js/script.js");
}
Comments
There are a couple of ways to accomplish what you are looking for.
1- put a content place holder in the section of your master page
<head runat="server">
<asp:ContentPlaceHolder runat="server" ID="JavascriptPlaceHolder">
</asp:ContentPlaceHolder>
</head>
and in the specific page you want to add a javascript file add:
<asp:Content ID="Content2" ContentPlaceHolderID="JavascriptPlaceHolder" Runat="Server">
<script type="text/javascript" src="myfile.js" ></script>
</asp:Content>
2- When you are not using Update Panels, use the ClientScript:
Page.ClientScript.RegisterClientScriptInclude("MyKey", "/myfile.js");
3- When using Update Panel and partial page rendering, use the ScriptManager object to register your javascript: (For a script that should be available for the onload event or at least be available when an update panel refreshes)
string javascript_string = "function myAlert(){ alert('me'); }";
ScriptManager.RegisterStartupScript(this, typeof(string), "MyKey", javascript_string, false);
Use the content place holder where you can, then use either other technique when you can't.
