Which HTML element is commonly used to define global variables in HTML?

Which attribute is used to declare a global variable inside a <script> element in HTML?

A). data-global

B). global

C). globalvar

D). name

What is the output of the following HTML code snippet? <br> <br> <script> <br>var globalVar = 'Hello'; <br>console.log(globalVar); <br> </script>

A). Hello

B). Undefined

C). Error

D). 'Hello'

Which of the following best describes the relationship between global variables in HTML and CSS?

A). Global variables in HTML can be accessed directly within CSS using custom CSS properties

B). Global variables in HTML must be converted to CSS variables before they can be used in CSS

C). Global variables in HTML and CSS are unrelated and cannot interact with each other

D). Global variables in HTML can only be accessed within the HTML document and cannot be used in CSS

What is the purpose of using the defer attribute in a <script> element in HTML?

A). To delay the loading of the script until after the HTML content is parsed

B). To prevent the script from executing unless triggered manually

C). To execute the script asynchronously

D). To specify the script's global variables

Which of the following is a potential disadvantage of using global variables extensively within HTML documents?

A). Increased risk of naming conflicts and data pollution

B). Improved data organization and accessibility

C). Reduced dependency on JavaScript

D). Improved performance and efficiency

What is the correct syntax for accessing a global data attribute named 'global-var' from an HTML element with the ID 'myElement' using JavaScript?

A). document.querySelector('#myElement').getAttribute('data-global-var');

B). document.getElementById('myElement').getAttribute('global-var');

C). document.getElementById('myElement').getAttribute('data-global-var');

D). document.querySelector('#myElement').getAttribute('global-var');

What is a global variable in HTML?

A). A variable declared inside a function

B). A variable declared outside of any function or block

C). A variable declared within an HTML element

D). A variable declared with the global attribute

How can you mitigate the risk of naming conflicts when using global variables within HTML documents?

A). By using unique and descriptive names for global variables

B). By using shorter variable names

C). By using the global attribute to specify global variables

D). By using the namespace attribute to define variable namespaces

What is the purpose of using global variables in HTML?

A). To store data temporarily within a specific HTML element

B). To store data that needs to be shared and accessed across different parts of an HTML document

C). To restrict access to variables within a specific HTML element

D). To prevent accidental modification of variables

What is the purpose of using global variables within HTML elements using custom data attributes?

A). To store and retrieve data specific to each HTML element

B). To restrict access to data within specific HTML elements

C). To create variables with limited scope within HTML elements

D). To avoid using JavaScript for data manipulation