Express JS Express Template Engines 2

Question 1

Which Express method is used to register a custom or third-party template engine?

Accepted Answer

app.engine()

Answer

app.engine(ext, callback) maps a file extension to a render function, allowing Express to use any compliant template engine.

Question 2

In EJS, which tag executes JavaScript code without rendering any output to the page?

Accepted Answer

<% %>

Answer

<% %> is the scriptlet tag used for control flow (if/for/etc.) and executes code without writing output.

Question 3

Which Express setting changes the directory where template files are located?

Accepted Answer

app.set('views', path)

Answer

app.set('views', path.join(__dirname, 'templates')) overrides the default views directory to any custom path.

Question 4

In EJS, which tag outputs raw unescaped HTML directly into the page?

Accepted Answer

<%- %>

Answer

<%- %> outputs the value without HTML escaping, which is useful for rendering pre-sanitized HTML content.

Question 5

What is res.locals used for in Express template rendering?

Accepted Answer

Storing variables available to templates for the current request only

Answer

res.locals is request-scoped; properties set on it are available to templates rendered during that request/response cycle only.

Express JS Practice Test