Basic And Variables MCQ question and answer in javascript with solution Page-2 section-1

11.
JavaScript Code can be called by using

A. RMI

B. Triggering Event

C. Preprocessor

D. Function/Method

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12.
The type of a variable that is volatile is

A. Volatile variable

B. Mutable variable

C. Immutable variable

D. Dynamic variable

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13.
A hexadecimal literal begins with

A. 00

B. 0x

C. 0X

D. Both 0x and 0X

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14.
The generalised syntax for a real number representation is

A. [digits][.digits][(E|e)[(+|-)]digits]

B. [digits][+digits][(E|e)[(+|-)]digits]

C. [digits][(E|e)[(+|-)]digits]

D. [.digits][digits][(E|e)[(+|-)]digits]

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15.
When there is an indefinite or an infinity value during an arithmetic value computation, javascript

A. Prints an exception error

B. Prints an overflow error

C. Displays “Infinity”

D. Prints the value as such

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16.
Which of the following is not considered as an error in JavaScript?

A. Syntax error

B. Missing of semicolons

C. Division by zero

D. All of the mentioned

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17.
The escape sequence ‘f’ stands for

A. Floating numbers

B. Representation of functions that returns a value

C. f is not present in JavaScript

D. Form feed

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18.
The snippet that has to be used to check if “a” is not equal to “null” is

A. if(a!=null)

B. if (!a)

C. if(a!null)

D. if(a!==null)

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19.
The statement a===b refers to

A. Both a and b are equal in value, type and reference address

B. Both a and b are equal in value

C. Both a and b are equal in value and type

D. There is no such statement

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20.
Assume that we have to convert “false” that is a non-string to string. The command that we use is (without invoking the “new” operator)

A. false.toString()

B. String(false)

C. String newvariable=”false”

D. Both false.toString() and String(false)

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Basic And Variables MCQ question and answer in javascript with solution

11. JavaScript Code can be called by using

Answer & Solution

12. The type of a variable that is volatile is

Answer & Solution

13. A hexadecimal literal begins with

Answer & Solution

14. The generalised syntax for a real number representation is

Answer & Solution

15. When there is an indefinite or an infinity value during an arithmetic value computation, javascript

Answer & Solution

16. Which of the following is not considered as an error in JavaScript?

Answer & Solution

17. The escape sequence ‘f’ stands for

Answer & Solution

18. The snippet that has to be used to check if “a” is not equal to “null” is

Answer & Solution

19. The statement a===b refers to

Answer & Solution

20. Assume that we have to convert “false” that is a non-string to string. The command that we use is (without invoking the “new” operator)

Answer & Solution

11.
JavaScript Code can be called by using

12.
The type of a variable that is volatile is

13.
A hexadecimal literal begins with

14.
The generalised syntax for a real number representation is

15.
When there is an indefinite or an infinity value during an arithmetic value computation, javascript

16.
Which of the following is not considered as an error in JavaScript?

17.
The escape sequence ‘f’ stands for

18.
The snippet that has to be used to check if “a” is not equal to “null” is

19.
The statement a===b refers to

20.
Assume that we have to convert “false” that is a non-string to string. The command that we use is (without invoking the “new” operator)