CodeHS Unit 10 Questions and Answers with Verified Solutions

CodeHS Unit 10 Questions and Answers with Verified Solutions How can you access the first element of an array in JavaScript? A) array[0] B) array[1] C) () D) array(0) What will this code print? ``` let x = 10; (x * 2); ``` A) 10 B) 20 C) undefined D) Error 2 What does the `return` statement do in a function? A) Exits the function without returning a value B) Prints the value to the console C) Exits the function and returns a value D) Loops through the function Which of these is a correct way to define a function in JavaScript? A) function myFunction: {} B) function myFunction() {} C) def myFunction() {} D) function = myFunction() {} What does the `let` keyword do in JavaScript? A) Declares a block-scoped variable B) Declares a global variable 3 C) Declares a function D) Declares an array What will the following code print? ``` let arr = [1, 2, 3]; (h); ``` A) 2 B) 3 C) undefined D) Error How would you declare an array in JavaScript? A) array = {1, 2, 3} B) let array = [1, 2, 3]; C) array = (1, 2, 3)