
JS Talks, Quiz #5
Authored by Ievgen Ch.
Computers
1st - 12th Grade
Used 8+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Что будет в результате:
[] + false - null + true
0
Undefined
NaN
1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Что будет в результате:
['1'] - false + true
NaN
0
1
2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Какая арифметическая операция приводит к ошибке в JavaScript?
Умножение числа на строку
Корень из отрицательного числа
Деление на ноль
Никакая из перечисленных
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Чему равна длина arr.length массива arr?
let arr = [];
arr[1] = 1;
arr[3] = 33;
0
3
2
Больше
4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Что получится, если сложить true + false?
'truefalse'
0
1
NaN
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Язык JavaScript является подвидом языка Java – верно?
Да
Нет
Наоборот, Java - подвид JavaScript
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Как удалить элемент из середины массива?
var a = [1, 2, 3, 4, 5];
a.pop(2)
a.splice(2,1)
delete a[2]
a.slice(2,3)
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