Javascript Online Quiz

Q 1 - Which of the following is correct about features of JavaScript?

A - JavaScript is is complementary to and integrated with HTML.

B - JavaScript is open and cross-platform.

C - Both of the above.

D - All of the above.

Q 2 - Which of the following is the correct syntax to redirect a url using JavaScript?

A - document.location='http://www.newlocation.com';

B - browser.location='http://www.newlocation.com';

C - navigator.location='http://www.newlocation.com';

D - window.location='http://www.newlocation.com';

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 defines how many total digits to display of a number?

A - toExponential()

B - toFixed()

C - toLocaleString()

D - toPrecision()

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()

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

A - toLocaleUpperCase()

B - toUpperCase()

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 calls a function for each element in the array?

A - concat()

B - every()

C - filter()

D - forEach()

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()