Javascript Online Quiz

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

A - JavaScript variable names must begin with a letter or the underscore character.

B - JavaScript variable names are case sensitive.

C - Both of the above.

D - None 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 length of the string?

A - length()

B - size()

C - index()

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 Boolean object returns a string of either 'true' or 'false' depending upon the value of the object?

A - toSource()

B - valueOf()

C - toString()

D - None of the above.

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 creates a string to be displayed as bold as if it were in a <b> tag?

A - anchor()

B - big()

C - blink()

D - bold()

Q 8 - Which of the following function of String object causes a string to be displayed in the specified color as if it were in a <font color='color'> tag?

A - fixed()

B - fontcolor()

C - blink()

D - bold()

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 reverses the order of the elements of an array?

A - reverse()

B - push()

C - reduce()

D - reduceRight()