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Javascript Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Javascript Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Answer : D

Explanation

All of the above options are correct.

Q 2 - How can you get the type of arguments passed to a function?

A - using typeof operator

B - using getType function

C - Both of the above.

D - None of the above.

Answer : A

Explanation

Using typeof operator, we can get the type of arguments passed to a function.

Q 3 - Which of the following type of variable is visible only within a function where it is defined?

A - global variable

B - local variable

C - Both of the above.

D - None of the above.

Answer : B

Explanation

Local Variables: A local variable will be visible only within a function where it is defined. Function parameters are always local to that function.

Answer : B

Explanation

var book = new Object(); creates an object.

Q 5 - Which of the following function of Boolean object returns a string of either 'true' or 'false' depending upon the value of the object?

A - toSource()

B - valueOf()

C - toString()

D - None of the above.

Answer : C

Explanation

toString() − Returns a string of either 'true' or 'false' depending upon the value of the object.

Q 6 - Which of the following function of String object returns the characters in a string between two indexes into the string?

A - slice()

B - split()

C - substr()

D - substring()

Answer : D

Explanation

substring() − Returns the characters in a string between two indexes into the string.

Q 7 - Which of the following function of String object creates a string to be displayed as bold as if it were in a <b> tag?

A - anchor()

B - big()

C - blink()

D - bold()

Answer : D

Explanation

bold() − Creates a string to be displayed as bold as if it were in a <b> tag.

Q 8 - Which of the following function of Array object returns a new array comprised of this array joined with other array(s) and/or value(s)?

A - concat()

B - pop()

C - push()

D - some()

Answer : A

Explanation

concat() − Returns a new array comprised of this array joined with other array(s) and/or value(s).

Q 9 - Which of the following function of Array object returns true if every element in this array satisfies the provided testing function?

A - concat()

B - every()

C - push()

D - some()

Answer : B

Explanation

every() − Returns true if every element in this array satisfies the provided testing function.

Q 10 - Which of the following function of Array object adds and/or removes elements from an array?

A - toSource()

B - sort()

C - splice()

D - unshift()

Answer : C

Explanation

splice() − Adds and/or removes elements from an array.

javascript_questions_answers.htm
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