
3.9 Synthesis: 3.6 + 3.7
Authored by Edukoht Edukohter
Computers
2nd Grade
Used 25+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Какая ошибка в создании этого массива?
let arr = ["Nikita"; "Vasja"; "Edukohter"]
Вместо точек с запятой должна идти просто запятая
Ошибок нет, код будет работать
Нужно убрать кавычки у имен, тогда код будет корректным
Нужно поменять let на const
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
При помощи какой команды в JS можно выбрать все кнопки?
document.querySelector("button")
document.querySelector("button1", "button2", "button3")
document.querySelectorAll("button")
document.querySelector("elementButton")
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Какой индекс(порядковый номер в массиве) будет у элемента "Vasja"?
let arr = ["Nikita", "Vasja", "Edukohter"]
0
3
2
1
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
let arr = ["Nikita", "Vasja", "Edukohter"]
console.log(arr.length)
Что возвращает команда "arr.length"?
Количество заглавных букв в массиве
Количество запятых в массиве
Количество элементов в массиве
Индекс последнего элемента массива
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
let arr = ["Nikita", "Vasja", "Edukohter"]
console.log(arr.length + 2)
Что будет выведено в консоль?
5
4
3
6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Что нужно написать в console.log, чтобы получить элемент "Vasja"
let arr = ["Nikita", "Vasja", "Edukohter"]
console.log()
arr[3]
arr[1]
arr[0]
arr[2]
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Что будет выведено в консоль?
let arr = ["Nikita", "Vasja", "Edukohter"]
console.log(arr[arr.length - 1])
Ошибка
"Vasja"
"Edukohter"
undefined
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