Aibles javascript quiz

How do I declare a new variable?

• var newVariable = 5

• var 5 = myVariable

• Variable int = new Variable()

• int var = 5

In JavaScript, what does the following expression evaluate to?

[ ] == [ ]

• true

• undefined

• []

• false

What's the output?

for (var i = 0; i < 5; i++) {

console.log(i);

}

• 12345

• 1234

• 01234

• 012345

In JavaScript, which method converts JSON data to a JavaScript object?

• JSON.fromString()

• JSON.parse()

• JSON.toObject()

• JSON.stringify()

In JavaScript, which operator returns true if the two compared values are not equal?

• <>

• ~

• ==!

• !==

What's the output?

• true true true true

• false false false false

• true true false false

• false false true true

What's the output?

var x = "411" + 1

var y = "411" - 1

console.log(x, y)

• 412 410

• 4111 41

• 4111 410

• 412 41

What's the output?

• { name: 'Peter', age: 10 }

• { name: 'Johnny', age: 10 }

• { name: 'Peter', age: 13 }

• { name: 'Johnny', age: 13 }

What's the output?

• 6 14 19

• 6 14 5

• 6 8 19

• 6 8 5

How would you access the second element in an array?

• nums.2

• nums[2]

• nums[1]

• nums_1