Answer & Solution
<script>
element in HTML to declare a global variable, allowing the variable to be accessed and modified across different parts of the HTML document.
<script>
element in HTML?
<script>
element in HTML to declare a global variable, allowing the variable to be accessed and modified 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
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
Which HTML element is commonly used to define global variables in HTML?
A). <div>
B). <variable>
C). <script>
D). <global>
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 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>
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
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');
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