Quiz

Question 1

5 + “34”

Answer 1

534

Question 2

5 - “4”

Answer 2

1 *This occurs because js can add strings together for eg.) “hello” + “world” would be “helloworld” but you can’t subtract a string from a string. “hello” - “bye” would result in a NaN.
So js converts the stringed number into a number whereas when you’re adding a number to a stringed number, js would convert the number into a string.

Question 3

10 % 5

Answer 3

0

Question 4

5 % 10

Answer 4

5

Question 5

” “ + “ “

Answer 5

” “

Question 6

” “ + 0

Answer 6

” 0”

Question 7

3 - 4

Answer 7

-1

Question 8

“bob” - “bill”

Answer 8

NaN

Question 9

5 >= 1

Answer 9

true

Question 10

0 === 1

Answer 10

false

Question 11

4 <= 1

Answer 11

false

Question 12

1 != 1

Answer 12

false

Question 13

“A” > “B”

Answer 13

false

Question 14

“B” < “C”

Answer 14

true

Question 15

“a” > “A”

Answer 15

true

Question 16

“b” < “A”

Answer 16

false

Question 17

true === false

Answer 17

false

Question 18

true != true

Answer 18

false

Question 19

// Evaluate this question. What is a + b?
var a = 34;
var b = 21;
a = 2;
a + b // what is the answer here?

// What is c equal to?
var c; undefined

Answer 19

a + b = 23

c = undefined