Question 1

What will be the value of result after the following code is executed?var arr = [1, 2, 3, 4, 5];var result = arr.splice(2, 2);

Options :

A : [1, 2, 3, 4, 5]

B : [1, 2, 5]

C : [3, 4]

D : [1, 2, 3, 4, 5, 3, 4]

Answer: C

Question 2

What is the output of the following code?const add = (a, b) => a + b; const double = n => add(n, n); console.log(double(3));

Options :

A : 6

B : 9

C : 12

D : 15

Answer: A

Question 3

What will be the output of the following code?const a = { x: 1 };const b = { y: 2 };const c = { ...a, b, z: 3 };console.log(c);

Options :

A : { x: 1, y: 2, z: 3}

B : { y: 2 }

C : {x: 1, b: { y: 2 }, z: 3}

D : undefined

Answer: C

Question 4

The shape object can be converted to JSON format using the built-in command:

Options :

A : JSON.parse(shape);

B : JSON.stringify(shape);

C : JSON(shape);

D : shape.toJSON();

Answer: B

Question 5

What is the correct output of the following code:var obj = { value: 10};var foo = function() { console.log(this.value);};var bar = function() { console.log(this.value);};var boundFoo = foo.call(obj);var boundBar = bar.bind(obj)();console.log(boundFoo === boundBar);

Options :

A : 10 10 false

B : 10 undefined false

C : 10 10 true

D : undefined 10 false

Answer: C

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