<container>
<script>
</container>
tag?
What is the difference between the defer and async attributes in the <container>
<script>
</container>
tag?
A). defer delays execution until after the HTML document is fully parsed, while async executes as soon as it is downloaded
B). defer executes the script immediately, while async delays execution until after HTML parsing is complete
C). defer and async both delay script execution until after HTML parsing is complete
D). There is no difference between defer and async attributes
What attribute is used to specify the path of an external JavaScript file?
A). href
B). src
C). path
D). file
What is the correct syntax for referring to an external script called 'app.js'?
A). <container>
<script src='app.js'>
</container>
B). <container>
<script href='app.js'>
</container>
C). <container>
<script link='app.js'>
</container>
D). <container>
<script file='app.js'>
</container>
Can an external JavaScript file contain HTML?
A). Yes
B). No
C). Only if it is within a <container>
<script>
</container>
tag
D). Only if it is within a <container>
<body>
</container>
tag
Which file extension is used for JavaScript files?
A). .java
B). .js
C). .javascript
D). .jsx
What happens if the external JavaScript file is not found?
A). The browser will ignore the script
B). The browser will show a 404 error
C). The script will not run
D). All of the above
How do you comment out code in JavaScript?
A). // This is a comment
B). /* This is a comment */
C). <!-- This is a comment --!>
D). ## This is a comment
Can an external JavaScript file be cached by the browser?
A). Yes
B). No
C). Only if specified in the HTML
D). Only if it is under a certain size
What does the async attribute do when used in a <container>
<script>
</container>
tag?
A). Executes the script immediately
B). Delays script execution until HTML parsing is complete
C). Executes the script asynchronously
D). Executes the script before the HTML parsing begins
How can you include multiple external JavaScript files in a web page?
A). Use multiple <container>
<script>
</container>
tags
B). Separate file names with commas
C). Separate file names with semicolons
D). Use a single <container>
<script>
</container>
tag with multiple src attributes