Answer & Solution
<script>
tag is used to load the script asynchronously, allowing it to load and execute independently of other resources while the page continues to render. This can significantly improve page load performance.
<script>
tag?
<script>
tag is used to load the script asynchronously, allowing it to load and execute independently of other resources while the page continues to render. This can significantly improve page load performance.
How can you specify the version of JavaScript used in a <script>
tag?
A). By including the version attribute in the <script>
tag.
B). By specifying the JavaScript version in the opening <script>
tag comment.
C). By using the type attribute with the appropriate MIME type.
D). By placing the JavaScript code within a CDATA section.
What is the purpose of the <noscript>
tag in HTML?
A). It specifies that JavaScript should not be executed on the page.
B). It provides fallback content for browsers that do not support JavaScript.
C). It includes external JavaScript files in the document.
D). It allows asynchronous loading of scripts.
What is the purpose of using external JavaScript files instead of inline code?
A). To reduce code redundancy and promote code reusability.
B). To execute JavaScript code asynchronously.
C). To ensure inline code executes before external code.
D). To improve security by isolating JavaScript code.
What attribute of the <script>
tag allows asynchronous loading of scripts?
A). type='async'
B). async='true'
C). defer='async'
D). async
In which scenario is it beneficial to use the defer attribute in the <script>
tag?
A). When the script should be executed synchronously.
B). When the script is critical for page functionality and must execute immediately.
C). When the script can be loaded asynchronously and executed after the document is parsed.
D). When the script must be executed before the document is fully loaded.
How can you include an external JavaScript file using the <script>
tag?
A). <script src='script.js'>
</script>
B). <script>
src='script.js'
C). <script type='text/javascript' src='script.js'>
</script>
D). <js src='script.js'>
</js>
What is the purpose of including the defer attribute in a <script>
tag?
A). To execute the script asynchronously.
B). To delay script execution until after the document is parsed.
C). To specify the scripting language used in the script.
D). To load an external script file.
Which scenario is ideal for using the async attribute in the <script>
tag?
A). When the script must be executed in a specific order.
B). When the script contains critical functionality that should not be delayed.
C). When the script can be executed independently and does not depend on other scripts or document elements.
D). When the script must be executed after the document is parsed.
How does the browser handle the execution of a <script>
tag with the defer attribute?
A). It delays script execution until after the document is parsed, maintaining script order.
B). It executes the script as soon as it's available, even if the document is still parsing.
C). It waits for user interaction before executing the script.
D). It prevents the script from executing until the user interacts with the page.
Which of the following is true about inline JavaScript code execution?
A). It always executes before external JavaScript files.
B). It executes simultaneously with external JavaScript files.
C). It executes after external JavaScript files.
D). It depends on the order of inclusion in the HTML document.