Pat Greenhouse/Globe Staff

Antoine Hage, chief technology officer of FreeCause, explained JavaScript code to employees.

Pat Greenhouse/Globe Staff

Earlier this year, 29-year-old company chief executive Michael Jaconi told all 60 employees that they had to learn the programming language.

Pat Greenhouse/Globe Staff

By the end of the year, the goal is to have every FreeCause employee develop a product using the skills they learned.

Pat Greenhouse/Globe Staff

Jessica Reinhard, a graphic designer, took notes at the JavaScript boot camp.

Pat Greenhouse/Globe Staff

Elizabeth Goncalves, marketing manager, beamed after declaring a string variable on the board during a JavaScript class.