Whenever there is a virtual directory, my image path references (src='/images/image.jpg') inside my .js files are failing as the virtual directory becomes part of the path hierarchy.
In other areas of my application, I am able to manage this issue using server methods that provide me with the correct path information.
Does anyone have any suggestions for how to handle this problem specifically for .js files?
The links will originate from the js files location, not from the application's root directory. If you have a js folder inside your root, consider using .. in the image path (../images/image.jpg).
Is it possible to include a path parameter in your function?
// within the back-end code
String imagePath = Page.ResolveClientUrl("~/images/");
...
<%-- included in the markup --%>
doSomething('<%= imagePath %>');
...
// within JavaScript
function doSomething(path) {
var imageSrc = path + '/image.jpg';
}
There are various ways to enhance the elegance of the implementation, but this conveys the basic concept.
Assuming your system is based on Unix, there are a few options available to you that should be effective. Here's what I recommend:
To streamline the retrieval of environmental parameters for use in various JS objects, I developed a handler like the one below:
/Environment.ashx/.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace MvcApplication2
{
/// <summary>
/// Summary description for $codebehindclassname$
/// </summary>
public class Environment : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/javascript";
context.Response.Cache.SetCacheability(HttpCacheability.Public);
context.Response.Cache.SetExpires(DateTime.Now.AddSeconds(600));
context.Response.Write(String.Format("Environment = {{ RootPath:\"{0}\" }};", context.Request.ApplicationPath)); // set any application info you need here
}
public bool IsReusable
{
get
{
return false;
}
}
}
}
Do not forget to enable the handler in your web.config:
<configuration>
<system.web>
<httpHandlers>
<!-- ... -->
<add verb="*" path="environment.ashx" validate="false" type="MvcApplication2.Environment, MvcApplication2"/>
</httpHandlers>
</system.web>
Next, make sure to include the handler in your master or content ASPX page (assuming ASP.NET MVC):
<html>
<head>
<!-- include other necessary JS files and resources here -->
<script src="<%=Url.Content("~/environment.ashx"); %>" type="text/javascript"></script>
</configuration>
</head>
</html>
Now, with Environment.ashx loaded, you can easily reference Environment.RootPath in all JS objects and scripts:
var imagePath = Environment.RootPath + "images/image.jpg";
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