In the spirit of the Expressions Lab, here are a series of mostly unrelated topics, each showcasing an interesting and hopefully useful idea or technique. Unlike the Expressions Lab, you will find a more detailed analysis of the code here.

The code itself appears twice. The first version is for your convenient copy-and-paste use. You should be able to drop these expressions right into your own AE projects. The second version is annotated with my comments to help you understand how the code works.

You’ll notice that in the analysis section of each topic, the code itself is color coded. Bright blue is used to identify the JavaScript keywords. The lighter blue identifies the After Effects-specific extensions to the language. The purple is used to highlight variable names, numbers, and text - basically anything that is defined by the expression writer. JavaScript operators and essential punctuation are shown in black. My comments are in red. I hope you enjoy your visit. If you find errors or have questions, comments or suggestions for new topics, please contact me. Happy expressioneering!