Javascript Online Quiz

Q 1 - Which of the following is true about variable naming conventions in JavaScript?

A - You should not use any of the JavaScript reserved keyword as variable name.

B - JavaScript variable names should not start with a numeral (0-9).

C - Both of the above.

D - None of the above.

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

A - Using args.length property

B - Using arguments.length property

C - Both of the above.

D - None of the above.

Q 3 - Which built-in method combines the text of two strings and returns a new string?

A - append()

B - concat()

C - attach()

D - None of the above.

Q 4 - Which built-in method reverses the order of the elements of an array?

A - changeOrder(order)

B - reverse()

C - sort(order)

D - None of the above.

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 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 displayed in fixed-pitch font as if it were in a <tt> tag?

A - fixed()

B - big()

C - blink()

D - bold()

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 returns true if at least one element in this array satisfies the provided testing function?

A - reverse()

B - shift()

C - slice()

D - some()