
Массивы, строки, classList, циклы в JavaScript.
Authored by Ольга Якубенко
Computers
6th Grade
Used 4+ times

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25 questions
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1.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Дан массив: let arr = [1, 2, 3, 4, 5];
Измените массив arr при помощи метода splice() так,
чтобы получился массив arr= [1, 'cat', 'dog', 'parrot', 5];
Код пишем без пробелов, к конце ставим точку с запятой.
Переприсвоение "arr=" не пишем, только прописываем код с методом.
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Выберите правильные варианты создания пустого массива:
let arr = new Array();
let arr={}
let arr= new String
let arr=[];
let arr=new Number()
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой метод в JavaScript добавляет новый элемент в конец массива?
nexyOf()
shiftOf()
push()
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой метод удаляет последний элемент массива и возвращает его?
remove()
pop()
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какой метод удаляет первый элемент массива и возвращает его?
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какой метод добавляет элемент в начало массива?
7.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
Даны три массива:
let arr1 = [1, 2, 3];
let arr2 = [4, 5];
let arr3 = ['вышел', 'зайка', 'погулять'];
Примените метод (подумайте какой) и создайте новый массив new_arr, чтобы получилось:
[1, 2, 3, 4, 5, 'вышел', 'зайка', 'погулять'].
Между let и new_arr ставим пробел, далее код пишем без пробелов.
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