Answer & Solution
Answer: Option B
Solution:
In HTML, a global variable refers to a variable declared outside of any function or block, making it accessible throughout the entire HTML document.
Q
What is a global variable in HTML?
Related Questions on Average
Which attribute is used to declare a global variable inside a <script> element in HTML?
A). data-global
B). global
C). globalvar
D). name
How can you declare a global variable in HTML using the data-* attribute within an HTML element?
A). <div data-global-var='value'> </div>
B). <div global-var='value'> </div>
C). <div data='global-var: value'> </div>
D). <div global data-var='value'> </div>
Which HTML element is commonly used to store and access global data attributes in HTML?
A). <form>
B). <body>
C). <head>
D). <html>
How can you ensure that a global variable defined in an external JavaScript file is accessible within an HTML document?
A). By linking the external JavaScript file using the <link> element
B). By using the import statement to import the variable from the external file
C). By using the defer attribute in the <script> tag that links the external file
D). By using the <script> tag to link the external JavaScript file
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 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
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
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 purpose of using global variables in CSS?
A). To store values that can be reused throughout a CSS stylesheet
B). To restrict the scope of variables within specific CSS rules
C). To override default browser styles
D). To prevent conflicts between CSS selectors
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