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JavaScript Basics - Variables and Operators

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JavaScript Basics - Variables and Operators

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Variables and Operators

Created by

Minh Nhat Pham
Minh Nhat Pham
Viet Nam

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JavaScript Basics - Variables and Operators
 

JavaScript Basics - Variables and OperatorsOnline version

Variables and Operators

by Minh Nhat Pham
1

What keyword is best for a variable that can change value?

2

Which keyword declares a constant value?

3

What is the result of `5 + 3`?

4

What does `10 % 3` equal?

5

Which operator adds 1 to a variable?

6

Which operator subtracts 1 from a variable?

7

What does `let x = 5; x += 3;` make x equal?

8

Which symbol is used for multiplication?

9

What is the result of `10 / 2`?

10

Which operator gives remainder after division?

11

What does `5 == "5"` return?

12

What does `5 === "5"` return?

13

Which keyword is rarely used in modern JavaScript?

14

What is the output of `let a = 7; a -= 2;`?

15

Which operator means "greater than"?

16

Which operator means "less than"?

17

What is the result of `3 * 4`?

18

What is the result of `20 % 6`?

19

What is the result of `2 ** 3`?

20

What does `let x = 10; x /= 2;` make x equal?

21

Which operator checks equality without type conversion?

22

Which operator assigns a value to a variable?

23

What is the output of `let y = 9; y--;`?

24

Which operator combines addition and assignment?

25

Which operator checks inequality?

26

What is the output of `let a = 15 % 4;`?

27

What is the result of `true == 1`?

28

What is the result of `true === 1`?

29

Which operator multiplies and assigns the value?

30

What is the value of `let n = 2; n **= 3;`?

 
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