<head> section?
<head>.
Which of the following is a recommended practice for optimizing JavaScript performance?
A). Minify and concatenate scripts.
B). Include all scripts in the <head>.
C). Use synchronous loading for all scripts.
D). Load scripts without optimization.
What happens if JavaScript code in the <head> section of an HTML document is not properly handled?
A). It may block rendering and cause delays.
B). It automatically moves to the <body>.
C). It gets executed twice.
D). It has no impact on the page.
When using an external JavaScript file in the <head> section with the defer attribute, when does it get executed?
A). After the HTML content is fully parsed.
B). Before the HTML content is parsed.
C). As soon as it starts loading.
D). After all other scripts in the <head>.
Which scenario is suitable for placing JavaScript in the <head> section of an HTML document?
A). Initializing variables or configurations.
B). Dynamic content manipulation.
C). User interaction scripts.
D). External script loading.
Using the defer attribute with an external JavaScript file in the <body> section means that the script:
A). Loads and executes after HTML parsing.
B). Loads synchronously with HTML parsing.
C). Loads and executes before HTML parsing.
D). Loads but doesn't execute.
Using the defer attribute with an external script in the <head> section means that the script:
A). Loads and executes after HTML parsing.
B). Loads synchronously with HTML parsing.
C). Loads and executes before HTML parsing.
D). Loads but doesn't execute.
Placing JavaScript at the end of the <body> section of an HTML document can result in:
A). Faster initial page rendering.
B). Slower overall page loading.
C). No impact on page performance.
D). Delayed execution of JavaScript.
Which attribute can be used to make external JavaScript files load asynchronously in the <head> or <body> sections?
A). async
B). defer
C). sync
D). load
Variables declared in the <body> section of an HTML document have what scope by default?
A). Local to the script or function.
B). Global throughout the document.
C). Limited to the <body> section.
D). Not accessible in JavaScript.
Variables declared in the <head> section of an HTML document are accessible:
A). Globally throughout the document.
B). Only within the <head> section.
C). Only after the page has fully loaded.
D). Nowhere in the document.