Javascript

Javascript

1st Grade

50 Qs

quiz-placeholder

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Javascript

Javascript

Assessment

Quiz

Professional Development

1st Grade

Practice Problem

Hard

Created by

Марсель Валиуллин

Used 50+ times

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50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Что покажет console.log

{h: "there"}

{g: "here"}

{h: "there", g: "here"}

null

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Что не является отдельным типом данных?

NaN

undefined

null

symbol

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

there', 'here'

undefined, undefined

Error, Error

null, null

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Что покажет console.log?

1, 2, 3

undefined, undefined, undefined

undefined, undefined, 3

undefined, 2, undefined

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Что покажет console.log?

1, 2, 3

undefined, undefined, undefined

undefined, undefined, 3

1, undefined, undefined

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Переменная обявленная через let...

не может быть изменена после объявления.

может хранить сразу несколько значений.

по умолчанию инициализируется значением undefined.

должна быть инициализирована значением.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Для приведения "MANGO" в нижний регистр используется метод,,,

"Mango".lowerCase()

"Mango".transform("lower-case")

"Mango".makeLowerCase()

"Mango".toLowerCase()

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