What does the for...of loop iterate over?

What is the syntax for an arrow function in ES6?

A). function(a, b) { return a + b; }

B). (a, b) => { return a + b; }

C). (a, b) => a + b

D). Both B and C

How do you create a generator function in ES6?

A). function* gen() {}

B). function gen*() {}

C). function*gen() {}

D). function * gen() {}

What is the output of const x = 10; x = 20;?

A). 20

B). 10

C). Error

D). undefined

What does Promise.resolve(5).then(console.log) print?

A). 5

B). undefined

C). null

D). Error

What is the output of [...'hello']?

A). ['hello']

B). ['h', 'e', 'l', 'l', 'o']

C). [104, 101, 108, 108, 111]

D). ['h', 'e', 'll', 'o']

How do you check if a value is an array in ES6?

A). Array.isArray(value)

B). value.isArray()

C). value instanceof Array

D). typeof value === 'array'

How do you interpolate variables in a string using template literals?

A). Hello, + name + '!'

B). Hello, ${name}!

C). 'Hello, ' + name + '!'

D). Both A and B

What is the correct syntax to create a class in ES6?

A). class MyClass {}

B). class = MyClass {}

C). new MyClass = class {}

D). create class MyClass {}

How do you declare a constant variable in ES6?

A). const

B). let

C). var

D). function

What is the output of typeof Symbol('description')?

A). 'string'

B). 'object'

C). 'symbol'

D). 'undefined'