Template

% let items = html_contents.iter().zip(html_titles.iter()); %>

<% for (i, (content, title)) in items.enumerate() {%> <% let expanded = i == selected; let target = format!("collapse{}a", i); %>

aria-controls="<%- target %>">

<%+ title.clone() %>

addremove

<%+ content.clone() %>

<% } %>