Javascript Online Quiz

Q 1 - Which of the following is true about typeof operator in JavaScript?

A - The typeof is a unary operator that is placed before its single operand, which can be of any type.

B - Its value is a string indicating the data type of the operand.

C - Both of the above.

D - None of the above.

Q 2 - Which of the following is a valid type of function javascript supports?

A - named function

B - anonymous function

C - Both of the above.

D - None of the above.

Q 3 - Which built-in method removes the last element from an array and returns that element?

A - last()

B - get()

C - pop()

D - None of the above.

Q 4 - Which built-in method returns the string representation of the number's value?

A - toValue()

B - toNumber()

C - toString()

D - None of the above.

Q 5 - Which of the following function of Boolean object returns the primitive value of the Boolean object?

A - toSource()

B - valueOf()

C - toString()

D - None of the above.

Q 6 - Which of the following function of String object returns the characters in a string beginning at the specified location through the specified number of characters?

A - slice()

B - split()

C - substr()

D - search()

Q 7 - Which of the following function of String object returns a string representing the specified object?

A - toLocaleUpperCase()

B - toUpperCase()

C - toString()

D - substring()

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

A - fixed()

B - fontcolor()

C - fontsize()

D - italics()

Q 9 - Which of the following function of Array object creates a new array with all of the elements of this array for which the provided filtering function returns true?

A - concat()

B - every()

C - filter()

D - some()

Q 10 - Which of the following function of Array object removes the first element from an array and returns that element?

A - reverse()

B - shift()

C - slice()

D - some()