Answer & Solution
<script>
element from another <script>
element by using the window object to access the global variable declared in the first script element.
<script>
element from another <script>
element in HTML?
<script>
element from another <script>
element by using the window object to access the global variable declared in the first script element.
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>
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 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'
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 HTML element is commonly used to store and access global data attributes in HTML?
A). <form>
B). <body>
C). <head>
D). <html>
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 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
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 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
Which CSS function is used to access the value of a global variable defined in HTML?
A). var()
B). global()
C). getGlobalVar()
D). accessGlobal()