Here is a list of web site validators that you can bookmark, so not to search for them every time you need them.
http://validator.w3.org/ The W3C Markup Validation Service
http://jigsaw.w3.org/css-validator/ The W3C CSS Validation Service
http://www.w3.org/2003/12/semantic-extractor.html Semantic data extractor
If you know of any more, add them in comments.
I’ve been workin today on Live Search for this web site. It uses Ajax and since this site is made in real XHTML, JavaScript works in xml mode.
When you work with JavaScript in real XHTML sites sometimes things are different than what they used to be. For example, you make an Ajax call and got transport.responseXML object. This is what you do to add that xml to your code.
var content = $('content')
var res_xml = document.importNode(transport.responseXML.documentElement, true)
content.parentNode.replaceChild(res_xml, content)
You can’t just take plain transport.responseXML object and use replaceChild or appendChild methods on it. You need to call importNode or adoptNode first, to import it to the current document, only after that you can use replaceChild or appendChild.
It took me 2 hours to figure that out, because Safari doesn’t show any error message when you don’t use importNode, it just doesn’t work. And in Firefox it works, but without any error message or a warning, which makes it very difficult to find the error.
I installed ruby 1.9.1 and was gonna upgrade my rails apps to Rails 2.3. These are the problems I ran into during the upgrade.
Automatic installation of mysql 2.8.1 gem for ruby 1.9.1 on Mac OS 10.5 doesn’t work. Here is how to install it manually.
1. First thing, check whether you meet requirements on mysql gem’s page.
Note: mysql 2.8.1 gem doesn’t support MySQL < 5.0.67 and 5.1.x family (according to this post).
2. Download it from their page on RubyForge. Unpack it, cd to its root directory. Run these commands.
ruby extconf.rb --with-mysql-config=/usr/local/mysql/bin/mysql_config --with-mysql-dir=/usr/local/mysql make sudo make install
Ruby-debug 0.10.3 gem doesn’t support ruby 1.9.x. If you have some important sites in rails, maybe you shouldn’t switch to ruby 1.9.x yet, as debugging will not be available.