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Calculate a value from options field in Webform custom composite element with Twig - Drupal 8

Recently, I was creating an event registration Webform. I created a custom composite field with the fields needed for each registrant: first name, last name, and a set of three radio options for their organization status: member, non-member, membership fee included in event registration. Each status has a different registration fee.

I then wanted to create a computed Twig field that would calculate the total registration fee by getting the data from the chosen radio option for each attendee and adding it up. This proved surprisingly tricky.

Truncated expanding text field with "show more" link in Drupal 8 & Twig

I've been working on a website with the requirement to truncate certain text fields—display the first several words of the text, with a "show more" link which on click, expands the rest of the text.

As I was under a very tight deadline, I found and implemented a jQuery plugin that did what I needed. Quick and easy.