AP Computer Science Principles Pre-Test

Front

Which of the following is a valid way to declare a variable in JavaScript?
Options: `var myVariable;`, `variable myVariable;`, `declare myVariable;`, `int myVariable;`

Back

`var myVariable;`

Front

What will be the output of the following code snippet? var x = 5; var y = 10; console.log(x + y);

Back

15

Front

Which of the following is a function declaration in JavaScript?
Options: `function myFunction() {}` , `let myFunction = function() {}` , `const myFunction = () => {}` , `myFunction() = function() {}`

Back

`function myFunction() {}`

Front

What is the scope of a variable declared with `var` inside a function?

Back

Local to the function

Front

What will `add(3, 4)` return?

Back

7

Front

Which of the following is a valid way to create a list (array) in JavaScript? Options: `var myList = {};`, `var myList = [];`, `let myList = ();`, `let myList = <>;`

Back

`var myList = [];`

Front

What will be the output of the following code?
var fruits = ['apple', 'banana', 'cherry'];
console.log(fruits[1]);

Back

banana

Front

Which of the following statements correctly uses an `if` statement in JavaScript? Options: `if x > 5 then { console.log(x); }`, `if (x > 5) { console.log(x); }`, `if x > 5: console.log(x);`, `if (x > 5) then { console.log(x); }`

Back

`if (x > 5) { console.log(x); }`

Front

Which of the following is a primitive data type in JavaScript? Array, Object, String, Function

Back

String

Front

What will be the output of the following code?
var x = "5";
var y = 5;
console.log(x == y);

Back

true