Q11. How do you define variables with specific types in TypeScript?
Variables with specific types in TypeScript can be defined using type annotations. For example, you can declare a variable with a specific type like this: `let myVariable...
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Q12. What are HTML ARIA attributes and how are they used?
| Attribute | Description | Example | | ------------------ | -------------------------------------------------------------------------------------------------------------...
Q13. What are variables in SASS?
Variables in Sass (SCSS) store reusable styling values (colors, spacing units, fonts) identified by a dollar sign (**`$`**) prefix: ```scss // Definition $primary-blue: #...
Q14. How do you use CSS variables to create more flexible and dynamic designs, and what are some use cases where variables are particularly useful?
CSS variables can improve maintainability and reduce repetition. Variables are particularly useful for theming, creating responsive designs, and making changes to global ...
Q15. Can you explain the concept of instance variables in a class in JavaScript?
In JavaScript, instance variables are properties of an object that are specific to an instance of a class. When we create a new instance of a class using the `new` keywor...
Q16. What does the variable environment in JavaScript's function execution context contain, and what is its purpose?
The variable environment contains all the variables, function declarations, and function arguments specific to that function. It keeps track of the function's local varia...
Q17. What is variable shadowing in JavaScript?
If there is a variable in the global scope, and you'd like to create a variable with the same name in a function. The variable in the inner scope will temporarily shadow ...
Q18. What is the data type of variables in JavaScript?
In JavaScript, **variables themselves do not have fixed types; values have types**. JavaScript is a dynamically and weakly typed language, meaning a variable declared wit...
Q19. What are the different ways to delete a variable in JavaScript?
We can delete a variable and remove it from memory in the following ways: 1. Using the `delete` keyword: ``` let x = 10; console.log(x); // Output: 10 delete x; console.l...