Global Variables in HTML Mockest | JavaScript

11.

Which CSS function is used to access the value of a global variable defined in HTML?

A). var() B). global() C). getGlobalVar() D). accessGlobal()

12.

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>

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13.

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

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14.

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>

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15.

Which HTML element is commonly used to store and access global data attributes in HTML?

A). <form> B). <body> C). <head> D). <html>

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16.

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

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17.

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

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18.

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');

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19.

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

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20.

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

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