Answer & Solution
tags <container>
<script>
</container>
tags, each with a src attribute pointing to a different file.
tags <container>
<script>
</container>
tags, each with a src attribute pointing to a different file.
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
What attribute is used to specify the path of an external JavaScript file?
A). href
B). src
C). path
D). file
What is the purpose of using external JavaScript files?
A). To keep HTML and JavaScript code separate
B). To reuse the JavaScript code on multiple pages
C). To improve the maintainability of the code
D). All of the above
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
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
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>
What is the advantage of using external JavaScript files?
A). Improves code readability
B). Allows reuse of code
C). Improves page load times due to caching
D). All of the above
Which HTML tag is used to link an external JavaScript file?
A). <container>
<script>
</container>
B). <container>
<link>
</container>
C). <container>
<style>
</container>
D). <container>
<js>
</container>
How can you prevent an external JavaScript file from being cached by the browser?
A). Add a query string to the src attribute
B). Use the async attribute
C). Use the defer attribute
D). It is not possible to prevent caching