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

Q 1 - Can you access Cookie using javascript?

A - true

B - false

Answer : A

Explanation

Yes! JavaScript can also manipulate cookies using the cookie property of the Document object.

Q 2 - Which of the following type of variable is visible everywhere in your JavaScript code?

A - global variable

B - local variable

C - Both of the above.

D - None of the above.

Answer : A

Explanation

Global Variables: A global variable has global scope which means it is visible everywhere in your JavaScript code.

Q 3 - Which built-in method returns the index within the calling String object of the first occurrence of the specified value?

A - getIndex()

B - location()

C - indexOf()

D - None of the above.

Answer : C

Explanation

indexOf() method returns the index within the calling String object of the first occurrence of the specified value, or -1 if not found.

Q 4 - Which built-in method returns the characters in a string beginning at the specified location?

A - substr()

B - getSubstring()

C - slice()

D - None of the above.

Answer : A

Explanation

substr() method returns the characters in a string beginning at the specified location through the specified number of characters.

Q 5 - Which of the following function of String object returns the character at the specified index?

A - charAt()

B - charCodeAt()

C - concat()

D - indexOf()

Answer : A

Explanation

charAt() − Returns the character at the specified index.

Q 6 - Which of the following function of String object extracts a section of a string and returns a new string?

A - slice()

B - split()

C - replace()

D - search()

Answer : A

Explanation

slice() − Extracts a section of a string and returns a new string.

Q 7 - Which of the following function of String object returns the calling string value converted to lower case while respecting the current locale?

A - toLocaleLowerCase()

B - toLowerCase()

C - toString()

D - substring()

Answer : A

Explanation

toLocaleLowerCase() − Returns the calling string value converted to lower case while respecting the current locale.

Q 8 - Which of the following function of String object causes a string to be displayed as a superscript, as if it were in a <sup> tag?

A - sup()

B - small()

C - strike()

D - sub()

Answer : A

Explanation

sup() − Causes a string to be displayed as a superscript, as if it were in a <sup> tag.

Q 9 - Which of the following function of Array object calls a function for each element in the array?

A - concat()

B - every()

C - filter()

D - forEach()

Answer : D

Explanation

forEach() − Calls a function for each element in the array.

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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