I recently re-discovered a powerful, but mostly hidden feature of jQuery. If you’ve used jQuery for any length of time you’ve probably used filter selectors like :input, :visible or :hidden. What you may not know is, it is really simple to add your own filter selectors. The secret lies in $.expr.filters which is an object of filters.
We use selenium extensively at work for automated acceptance tests. If you’ve never used selenium, it allows you to record and playback browser sessions and create integration tests from the perspective of a browser. Its generally a great tool, and really helps make sure we don’t release broken code. Recently, however I’ve found Selenium can have adverse reactions with jQuery.
I recently read “Clean Code” by Robert Martin an excellent book on writing clear, easy to maintain and well factored code. In it Robert Martin raises the point that methods should do what their names say, shouldn’t have ‘flag arguments’, and should do only one thing. This implies that overloaded methods are out.
While I’m a big fan of Mootools I work on a few projects using jQuery, and have recently been working on a project that needed a custom markup editor. I’m a big fan of the markItUp editor. Its a flexible and easily extensible editor, that affords a great deal of features in a small package.