There are three types of links that can be used in a web page: relative, and site root relative, and absolute. Which one is correct to use depends on the location of the page to which it links.
A relative link points to a location that is relative to the current page. Having a link to “index.html” is a relative link that points to the “index.html” page in the same directory as the current page. Links can also be made to “../index.html” to go to “index.html” in the parent directory. You can also use links like “../images/mypic.jpg” to find an image in the images directory inside the parent directory of the current page.
The disadvantage of using relative links is that the link can break if you move a file to another directory and thus change the relative position of the link’s destination. If you move the file from within Expression Web, however, it will automatically fix all relative links for you (as long as you have site metadata turned on).
Expression Web uses relative links as the default when creating a new hyperlink.
A site root-relative link points to a location that is relative to the root directory of the site. They begin with a slash “/”. Having a link to “/index.html” is a site root-relative link that points to the “index.html” page in the root directory of the site. One common use of this is to have all images in an images directory and then to link to images with links like “/images/mypic.jpg”.
The advantage of doing this is that the link stays the same no matter what directory the current page is in. This is also frequently used for linking in CSS files.
Expression Web started fully supporting site root-relative links in Version 3, Service Pack 1. Starting in that version, pages with site root-relative links are shown correctly in the design view. Expression Web will also correctly fix your links if you move a file that is linked to with a site root-relative link if you move the file within Expression Web (again, as long as you have site metadata turned on).
Note that you may get unexpected results when you use Preview in Browser from within Expression Web. This is because your browser shows your page from a local file – something like “C:\Users\myName\Documents\My Web Sites\mysite\index.html”. For a site root-relative link, your browser doesn’t know which directory to use for the site’s root so it will simply use “C:\”.
There is a simple solution to this problem, though. In the Site menu of Expression Web, open up Site Settings and click on the Preview tab. Make sure “Use Microsoft Expression Development Server” is checked, select “For all web pages”, and hit OK.
Now when you hit Preview in Browser, it will use an http://localhost address that has the site’s root set correctly and your site root-relative links will work correctly in your browser.
An absolute link is simply one that includes the entire path to the file like “http://www.contoso.com/news/index.html”. These are generally used for links that need to point to a different site than the one on which your page is located.
Expression Web supports these links as well.
Todd Moscinski, Senior Software Development Engineer
Microsoft Expression Web
The team has released a second free service pack for Expression Web 3, which provides the following improvements:
You can install Service Pack 2 if you have Expression Web 3 or Expression Web 3 Service Pack 1 installed on your computer.
A guest post for the Expression Web Team Blog by Morten Rand-Hendriksen
If you use Expression Web or most any text editing and reading software, you likely already use the Find feature to search for text. But if you’re one of the few who is not using the Find feature in Expression Web, you are likely wasting time doing repetitive tasks the program can do for you far more efficiently. I don’t know about you but for me time = money and I like to spend as little of the former to get as much of the latter as possible. And to that end Find is an important tool in my toolbox. In this post, I’ll breeze over the basic Find features everyone should already be using, and then dive deeper into a few scenarios for using more advanced Find options called HTML Rules.
The basic operation of the Find tool in Expression Web is simple: hit Ctrl+F on your keyboard and the Find and Replace dialog pops up.
From here you enter the string you want to find and click either Find Next or Find All. Using Find in this manner is an efficient way to dig through your long pages. For bigger problems that reside throughout multiple pages, read on
The majority of my work revolves around WordPress which is a fairly small CMS. Even so the current installation of WordPress running on this computer contains an astounding 3,475 files sorted in 375 folders. Finding a particular string of code in that pile of files by opening and searching each page one at a time would take hours if not days even if I managed to narrow down my search to just a few folders. Solution: select the “All pages” option to search every page in your site. If you are searching text that appears in the code of your page, make sure “Find in source code” is also selected in the Advanced column.
While working on a site I discovered that the WordPress function called wp_list_pages() wasn’t really doing what I wanted it to. To get it to work for my purposes I needed to find the file in which that function was defined but I also needed to know if there were any other elements currently using that function that would be affected by any change I made. In other words I needed to sort through my 3,475 files and find every instance where the string “wp_list_pages” showed up.
From these search results in the Find panel, I was able to ascertain not only where the original function was defined – the very first Find result in wp-includes/post-template.php – but I now also had a clear idea of exactly what other pages would be affected if I were to change the function. Since the search produced 109 results in 72 pages and only 5 of these were the original function definition, it’s safe to say altering the original function was not the best idea so I decided to write a new function with a new name based on the original. To get to the original function all I had to do was double-click on the search result and Expression Web opened up the file and highlighted the entry I was looking for.
Under my current WordPress work environment I have 20 individual themes I’m working on. Each theme controls the look and functionality of a separate site. In each of the themes there is a file called sidebar.php that defines what the sidebar should look like. This template is called by a custom WordPress function called get_sidebar() and shows up in all the templates as <?php get_sidebar() ?>. What if I wanted to change these function calls to a more generic php include function? A quick Find of the string “get_sidebar” tells me there are 213 occurrences of the function call in 213 pages so that’s a lot of work. Unless I use Find and Replace.
I hit Ctrl+F to open the Find and Replace dialog, and then I click the Replace tab. In the Find what box I enter the target string <?php get_sidebar() ?> and in the Replace with box I enter the new string <?php include ('fileName.php'); ?> . If you have more than one page selected in your site or if you check the “All pages” option, the Find and Replace dialog also provides the Replace All or Find All buttons. To make a sweeping change of all the calls to the get_sidebar() function I clicked the Replace All button and Expression Web made the substitutions on 213 pages for me in less than 30 seconds. The only thing I have to worry about is making sure I replaced the right function with the right new function.
So far we’ve looked at simple text searches. But from time to time you may need to do more specific searches to dig out particular instances of a query. For example, you may want to find only those links that have particular attributes, or content wrapped with a specific tag within a certain part of your site. Using global search for this is not particularly productive because you may end up sifting through hundreds or thousands of search results. To help you zero in on what you are looking for, Expression Web lets you apply HTML Rules to your search, which enable you to include or exclude results based on conditions you specify.
Once you’ve entered your search term in the Find and Replace dialog, click on the HTML Rules button to open the HTML Rules dialog. From here you can define a single or a series of conditions, nested or individual, to refine your search. To add a condition click New rule and a drop-down menu appears. The drop-down menu gives you the basic conditions you can use: With Attribute, Without Attribute, Containing, Not Containing, Inside Tag and Not Inside Tag. These are all Boolean (true or false) conditions. To see how it works in the real world consider the following two examples.
Most websites, including Wordpress blogs, have separate sections including a header, content, sidebar, and footer plus others. Let’s say I want to add a class to all the individual list items in my Wordpress sidebar. But there are two problems: First of all, there are other lists outside the sidebar area in my page, so those lists need to be excluded. Secondly, my sidebar actually features two sets of nested unordered lists. So to target only the list items I want, I need to create a condition that finds only the list items contained in the sidebar and then only those that are nested within another list item.
To make this conditional search, I click the HTML Tags tab in the Find and Replace dialog, and select “li” in the Find tag menu. In the Replace action menu, I select Set attribute value. This reveals two new options in the dialog. For Attribute select class and in To write “newClass”. This will add “class=”newClass” to each of the list items found.
With the query and variables defined the HTML Rules button is available. I click HTML Rules to open the HTML Rules dialog and select New rule. First I need to target only the list items within my sidebar. The sidebar is contained within a div with the id “sidebar” so the first condition should be Inside tag
This reveals a new drop-down where I can define my target tag, in this case div.
Under the rule I just created there is now a new indented New rule option that lets me make a sub-rule. I set the condition to With attribute, the attribute to id, the next box to equals and the last box to sidebar. Combined these two rules will now target only instances of the <li> tag that are housed within a <div id=”sidebar”> tag.
To target only list items within list items, I also need to create a new rule with the condition Inside tag and the tag set to li. After clicking OK in the HTML Rules dialog box, my two rules appear in the Find and Replace dialog box.
When I click Find Next, Expression Web finds only the list items that are children of another list item that is housed inside the div with the id #sidebar. Since this is a conditional search and replace (or in this case find and add attribute) by clicking Replace I add the .newClass class to only these list items.
Warning: The HTML Rules you create will apply to all of your subsequent searches within the same document until you either alter the HTML Rules or click the Clear Rules button in the Find and Replace dialog box.
HTML Rules also lets you search for things that are missing, such as required attributes. For a web page to be fully accessible, all hyperlinks require a title attribute to generate ScreenTips. Let’s say you noticed that some of your category links that start off each of your articles don’t have the necessary title attribute. Searching for this missing attribute is hard because your pages will likely be littered with hyperlinks in the header, sidebar and footer as well as within each post. What’s needed is a set of HTML Rules that target only the article heads, and only links without the title attribute.
The easiest way to come up with the correct set of HTML Rules is to spell your search out by answering this question: What are you looking for? In this case the answer is: I am looking for all the links (a tags) that don’t have the title attribute that are contained within divs with the class .meta-tag.
Hit Ctrl+F to open the Find and Replace dialog and select the HTML Tags tab. Set Find tag to a and Replace action to (none). If any HTML Rules are currently in effect click the Clear Rules button to remove them.
Click HTML Rules to open the HTML Rules dialog and create a New rule. As the answer said earlier you are looking for all the a tags with a missing title attribute so in the condition select Without attribute and set the attribute to title.
To search only within divs with the class .meta-tag create a new rule, set the condition to Inside tag and the tag to div. Create a new sub-rule and set the condition to With attribute, the attribute to class, leave the next box on equals and type out the value entry-meta. With the HTML Rules defined click OK to close the dialog and click Find Next to search your page.
As with the examples earlier in this article HTML Rules searches can be done on the current document, selected pages or all pages in the site. Combined these techniques along with some smart find strategies makes this an enormously powerful tool.
If you’ve made an unusually complicated set of HTML Rules you might want to tweak later and reuse, or you have a Find and/or Replace query you know you will need again, save your search query by clicking the Save icon in the Find and Replace dialog.
Find is one of those tools you have to use a few times before you realize its full potential. Off the bat it just looks like any old find and replace text tool, but when you start using it you’ll quickly realize its way more capable than that, especially if you work with larger sites or ones you didn’t code yourself. There are caveats of course, most importantly that if you make sweeping site-wide changes to your code like in my last example you better make sure you are targeting the right string and replacing it with the correct one, otherwise you can do a lot of damage with a single mouse click.