
Тест по JS
Authored by Сергей Ронжин
Computers
Professional Development
Used 3+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что вернёт 'foo' + + 'bar'?
'foobar'
'NaN'
'fooNaN'
NaN
'foo bar'
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
У какого оператора приоритет выше?
У этих операторов равный приоритет
* (умножение)
** (возведение в степень)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Разрешены ли дефисы в именах переменных?
Нет
Да
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какие кавычки недопустимы в синтаксисе (не внутри строк) JS?
" "
` `
Все перечисленные допустимы
« »
' '
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что вернет метод prompt, если пользователь отменит ввод нажатием на Esc?
"" (пустая строка)
{} (пустой объект)
null
undefined
[] (пустой массив)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что выведет этот код?
let y = 1;
let x = y = 2;
alert(x);
1
2
x
y=2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что делает оператор == ?
Сравнивает не учитывая тип данных
Нет такого оператора
Проверяет правильность введённых данных
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