Tip

Dynamic relative references for JavaScript & CSS files

Well-formed HTML is a worthy goal (some of us even try to render it to be well-formatted...), however it becomes tedious when working with some of the Notes/Domino features that don't allow computation, like the JS Header attribute of the form.

One way to get around this, and include all computed content in the HTML Head tags is to utilize formula language in the HTML Head Content attribute.

By doing this, we can preload images without having to parse the ".nsf" from the window.location.href, and reference all other types of modular files like JS, CSS, etc. The ability to resolve the database name without relying on the ".nsf" becomes mandatory when the homepage of your domino application is using a DNS. Using a virtual server with its own DNS may not include the path information to the database.

By using the following formula, all computed references may be handled dynamically to create a well formed HTML Head while having access to the computed database path. The JS Header may subsequently be used for any subsequent client-side scripting.

The following example assumes the following:
1) The page is not intended to be cached by the Web browser
2) There is a form field name "MetaKW" that contains valid meta data keywords
3) There is a form field name "MetaDesc" that contains a valid meta data description
4) There is a design element (in this case a Page) named "validation.js" used for embedded JavaScript
5) There is a design element (in this case a Page) named "DefaultCSS" used for Cascading Style Sheets
6) We have need of referencing the database name through use of the JavaScript variable (in this case "homeDb")


 REM "Begin HTMLHead Formula"; curDB := @ReplaceSubstring(@Subset(@DbName; -1) ; "\" ; "/"); noCache := "<meta http-equiv="PRAGMA" content="NO-CACHE">"; strMeta := "<META NAME="keywords" CONTENT="" + MetaKW + "">"; strMetaDesc := "<META NAME="description" CONTENT="" + MetaDesc + "">"; scriptSRC := "<SCRIPT LANGUAGE="JavaScript" src="/" + curDB + "/validation.js"></script>"; homeScriptVar := "<SCRIPT LANGUAGE="JavaScript">" + @NewLine + "var homeDb = '" + curDB+ "'" + @NewLine + "</script>"; cssSRC := "<LINK REL=stylesheet TYPE="text/css" HREF="/" + curDB + "/DefaultCSS" TITLE="style">"; REM "Draw out the concatenated string elements"; @NewLine + @NewLine + noCache + @NewLine + @NewLine + strMetaDesc + @NewLine + strMeta + @NewLine + @NewLine + scriptSRC +@NewLine + @NewLine + cssSRC + @NewLine + @NewLine + homeScriptVar + @NewLine + @NewLine

This was first published in February 2002

There are Comments. Add yours.

 
TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

Disclaimer: Our Tips Exchange is a forum for you to share technical advice and expertise with your peers and to learn from other enterprise IT professionals. TechTarget provides the infrastructure to facilitate this sharing of information. However, we cannot guarantee the accuracy or validity of the material submitted. You agree that your use of the Ask The Expert services and your reliance on any questions, answers, information or other materials received through this Web site is at your own risk.