樣板系統 (templates)

• https://www.npmjs.com/package/koa-views

pug

舊名叫 jade

https://pugjs.org/api/getting-started.html

html
  head
    title My Site - #{title}
    block scripts
      script(src='/jquery.js')
  body
    block content
    block foot
      #footer
        p some footer content

EJS (Embedded JavaScript templating)

https://ejs.co/

<% if (user) { %>
  <h2><%= user.name %></h2>
<% } %>

handlebars.js

https://handlebarsjs.com/