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CSCE 102 Exam 2 Questions and Answers 100% Pass
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CSCE 102 Exam 2 Questions and Answers 100% Pass How do you create a new object in JavaScript? By using the `new` keyword with a constructor function, e.g., `let obj = new Object();`. What is the purpose of the `map()` method in JavaScript arrays? To create a new array by applying a fun...

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  • September 10, 2024
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  • 2024/2025
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CSCE 102 Exam 2 Questions and
Answers 100% Pass
How do you create a new object in JavaScript?


✔✔ By using the `new` keyword with a constructor function, e.g., `let obj = new Object();`.




What is the purpose of the `map()` method in JavaScript arrays?


✔✔ To create a new array by applying a function to each element of the original array.




How do you check if a key exists in a Python dictionary?


✔✔ By using the `in` keyword, e.g., `key in dictionary`.




What does the `split()` method do in Python?


✔✔ It divides a string into a list of substrings based on a specified delimiter.




How do you perform string interpolation in JavaScript?


✔✔ By using template literals with backticks and `${}` for variables, e.g., `` `Hello, ${name}!`

``.




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, What is the purpose of the `continue` statement in a loop?


✔✔ To skip the rest of the current iteration and proceed to the next iteration of the loop.




How do you create a new instance of a class in Python?


✔✔ By calling the class name as if it were a function, e.g., `instance = ClassName()`.




What is the role of the `filter()` method in JavaScript arrays?


✔✔ To create a new array containing only elements that pass a test provided by a function.




How do you remove the last item from a list in Python?


✔✔ By using the `pop()` method, e.g., `list.pop()`.




What is the purpose of the `self` keyword in Python classes?


✔✔ To refer to the instance of the class within class methods.




What is the purpose of a `for` loop in programming?


✔✔ To repeatedly execute a block of code for a set number of iterations.




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