RESOLVEURL in external JavaScript file in ASP.

Https://stackoverflow.com/questions/11263425/page-resolveurl-is-not-working-in-javascript

The problem, as Poncha pointed out, are the as far as ASP. Concerned, the content delivered in your. js fil E is a string. It does not apply any sort of rendering before IIS delivers it. It gets the same treatment any and content file would, like a .jpg or .png .

In order to call server side methods ( ResolveUrl as), you need to use the <% ... %> syntax within any page this is parsed by ASP (like a .aspx or .master file).

By the the-by, these little code blocks go-a lot of different names:

• Inline Expressions
• Embedded Code Blocks
• Code Nuggets
• Server Side Script Delimiters
• Code Render Blocks
• ASP directives

In particular, we want a Displaying Expression <%= ... %> with the syntax, where:

The value of is entered after the equals sign was written into the current page

Knowing that, we can build our own own URLs by using ResolveClientUrl() which:

Returns a URL string suitable for use by the client to access resources on the WEB server

To this, we'll pass in the Web application Root Operator or ~ character, where asp:

Resolves the ~ operator to the root of the current application:

By combining these, we can save the result of the displaying expression to a JavaScript variable by placing the Followin G Code on your Master Page (adapted from Joel Varty ' s blog):

The following script should place before the external JavaScript reference

<script type="text/javascript"> var baseUrl = ‘<%= Page.ResolveClientUrl("~/") %>‘;</script>

Since JavaScript variables is inherently global, any other script can now access baseUrl the variable, so we can utilize it From the. js file with the following script:

function ResolveUrl(url) { return url.replace("~/", baseUrl);}

Now your can call ResolveUrl("~/DynamicMenu.ashx") directly from your JavaScript file and it'll create the appropriate URL by stripping out "~/" and Replacing it with the BASEURL created earlier by the server side script.

Further Reading:

• What is the difference between RESOLVEURL and Resolveclienturl?
• Relative Urls

RESOLVEURL in external JavaScript file in ASP.