Search Header Logo

Erros em JavaScript

Authored by Ryan Castro

Instructional Technology

12th Grade

Used 3+ times

Erros em JavaScript
AI

AI Actions

Add similar questions

Adjust reading levels

Convert to real-world scenario

Translate activity

More...

    Content View

    Student View

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qual é o resultado de `console.log(2 + '2')` em JavaScript?

4

'22'

NaN

undefined

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

O que `typeof NaN` retorna em JavaScript?

'number'

'NaN'

'undefined'

'object'

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qual é o valor de `null == undefined` em JavaScript?

true

false

TypeError

NaN

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qual é o resultado de `0.1 + 0.2 === 0.3` em JavaScript?

true

false

NaN

undefined

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

O que `[] + []` retorna em JavaScript?

'[]'

''

[]

NaN

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qual é o valor de `typeof null` em JavaScript?

'null'

'undefined'

'object'

'number'

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

O que `isNaN('NaN')` retorna em JavaScript?

true

false

'NaN'

undefined

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Microsoft

Continue with Microsoft

or continue with

Facebook

Facebook

Apple

Apple

Others

Others

Already have an account?