NA

Correct Option: C

jQuery contains many features like CSS manipulation, AJAX, Effects, and animations, Utilities, HTML event methods, HTML/DOM manipulation. There are also jQuery plugins for every given task. jQuery simplifies complicated things in JavaScript.

NA

Correct Option: A

For an empty string (“”), the Boolean value is false. E.g. var t= “ ”; Boolean(t); //it will return false. For -0(minus zero), the Boolean value is false. The Boolean value of undefined is also false. For null and false the Boolean value is also false.

NA

Correct Option: D

Math.random() generate any random number between 0 and 1. If we use Math.random() with Math.floor() it returns any random integer. E.g. Math.floor(Math.random * 1000); It will generate any random number between 0 and 999. For the sake of convenience we can also define a random function.

NA

Correct Option: A

There are mainly three methods with the help of those we can convert variables to numbers. The methods are the parseFloat() method, the Number() method, the parseInt() method. These are global JavaScript methods. valueOf() method return number as a number only.

NA

Correct Option: A

base 10 decimals are displayed as numbers by default by JavaScript. We can use toString() method for converting numbers as any of the base among 16, 2, 8. E.g var number= 1256; number.toString(6); number.toString(16); number.toString(2).