Q
Which attribute can be used to include a JavaScript file asynchronously?

Answer & Solution

Answer: Option D
Solution:
The async attribute is used to include a JavaScript file asynchronously. Adding async to the <script> tag tells the browser to load the script asynchronously while parsing the HTML, improving page loading speed and allowing other resources to load in parallel.
Related Questions on Average

What happens if the src attribute is used along with inline JavaScript code inside the <script> tag?

A). The inline code is ignored, and only the external file specified in src is loaded.

B). Both the inline code and the external file specified in src are loaded.

C). The browser throws an error because the src attribute cannot be used with inline code.

D). Only the inline code is executed, and the external file specified in src is ignored.

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.

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.

When including multiple <script> tags in an HTML document, what determines the order of script execution?

A). The order in which the <script> tags appear in the HTML document.

B). The order specified by the async attribute in each <script> tag.

C). The alphabetical order of the script filenames.

D). The defer attribute in each <script> tag.

Where is the recommended place to include external JavaScript files in an HTML document?

A). Inside the <head> section.

B). Before the closing tag.

C). After the opening tag.

D). Inside the <body> section, anywhere.

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 the language attribute in the <script> tag?

A). It specifies the scripting language used in the script.

B). It defines the content type of the script file.

C). It indicates whether the script is inline or external.

D). It specifies the version of HTML used in the document.

Which attribute of the <script> tag is used to delay script execution until after the document is parsed?

A). type='defer'

B). async='false'

C). defer='true'

D). defer

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 the type attribute in the <script> tag?

A). It specifies the version of HTML used in the document.

B). It specifies the scripting language used in the script.

C). It defines the content type of the script file.

D). It indicates whether the script is inline or external.

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