<body> element is commonly used to store and access global data attributes in HTML, allowing data to be shared and accessed across different parts of the HTML document.
How can you access a global data attribute defined in an HTML element using JavaScript?
A). By using the getAttribute() method
B). By using the data() method
C). By using the setDataAttribute() method
D). By using the getGlobalAttribute() method
Which statement accurately describes the scope of global variables declared in HTML?
A). Global variables are accessible only within the <script> element where they are declared
B). Global variables are accessible only within the <body> element where they are declared
C). Global variables are accessible throughout the entire HTML document
D). Global variables are accessible only within the <head> element where they are declared
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');
Which HTML element is commonly used to define global variables in HTML?
A). <div>
B). <variable>
C). <script>
D). <global>
What is the correct syntax for defining a global variable in HTML using the <script> element?
A). <script globalVar='value'>
B). <script var='globalVar' value='value'>
C). <script global var='globalVar' value='value'> </script>
D). <script global='globalVar' value='value'> </script>
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
How can you access a global variable defined in one <script> element from another <script> element in HTML?
A). By using the global attribute on both elements
B). By using the var keyword to declare the variable as global
C). By using the window object to access the global variable declared in the first script element
D). By using the <global> element to link the variables
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 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 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