Javascript Online Quiz

Q 1 - Which of the following is an advantage of using JavaScript?

A - Less server interaction

B - Immediate feedback to the visitors

C - Increased interactivity

D - All of the above.

Q 2 - Which of the following is the correct syntax to print a page using JavaScript?

A - window.print();

B - browser.print();

C - navigator.print();

D - document.print();

Q 3 - Which built-in method returns the character at the specified index?

A - characterAt()

B - getCharAt()

C - charAt()

D - None of the above.

Q 4 - All user-defined objects and built-in objects are descendants of an object called Object?

A - true

B - false

Q 5 - Which of the following function of Number object returns a string value version of the current number in a format that may vary according to a browser's locale settings.?

A - toExponential()

B - toFixed()

C - toLocaleString()

D - toString()

Q 6 - Which of the following function of String object returns the index within the calling String object of the last occurrence of the specified value?

A - lastIndexOf()

B - search()

C - substr()

D - indexOf()

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

A - toLocaleLowerCase()

B - toLowerCase()

C - toString()

D - substring()

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

A - sup()

B - small()

C - strike()

D - sub()

Q 9 - Which of the following function of Array object returns the last (greatest) index of an element within the array equal to the specified value, or -1 if none is found?

A - indexOf()

B - join()

C - lastIndexOf()

D - map()

Q 10 - Which of the following function of Array object applies a function simultaneously against two values of the array (from right-to-left) as to reduce it to a single value?

A - pop()

B - push()

C - reduce()

D - reduceRight()