This would mean adding <!DOCTYPE html> in the HTML and "use strict"; in the JS, and following modern best practices (e.g. use const and let instead of var).
Note that just adding a DOCTYPE breaks our layout, since it currently depends on "quirks mode".
This would mean adding
<!DOCTYPE html>in the HTML and"use strict";in the JS, and following modern best practices (e.g. useconstandletinstead ofvar).Note that just adding a
DOCTYPEbreaks our layout, since it currently depends on "quirks mode".