JS khá mệt
Quiz
•
Mathematics
•
University
•
Practice Problem
•
Medium
VJET STUDIO
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Enhance your content in a minute
20 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Chọn các đáp án đúng
Cách khai báo biến hợp lệ?
Var a= 8;
const a= 8;
let a;
const a;
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6
5
11
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khai báo biến dùng const có dụng gì?
Không
Có. Vì nó mang giá trị undefined
Có. Vì nó cố định biến đó không thể thay đổi
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
const và let ra đời trong phiên bản nào?
vanilaJS
ES5
ES6
ES7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho điểm câu này ai nhanh thì điểm + cao :))
Pick 2
1
2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dòng 1 x= 5;
Dòng 2 x= 5;
Dòng 1 x= undefined;
Dòng 2 x= 5;
Dòng 1 x= undefined;
Dòng 2 x= undefined;
Dòng 1 x= 5;
Dòng 2 x= undefined;
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5
10
undefined
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