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 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 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
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
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
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'
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 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>
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 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 attribute is used to declare a global variable inside a <script>
element in HTML?
A). data-global
B). global
C). globalvar
D). name