Question

HTML ASSIGNMENT

Question 1: What is the value of the variable age after the following JavaScript statements are executed?

var age = 30;

age = " age is: " + age + 5;

A. age is 30

B. age is + age + 5

C. age is 305

D. age is 35

Question 2:

Assume there is an external JS file named "addContent.js". This file is located in the same folder as the HTML document "addContent.html". In order to make this external JS work on the web page written by this HTML document, we can use the following link element  

<link href="addContent.js">

to add a reference to this external JS file in the HTML document.

A. True

B. False

Question 3:

Given the following variable declaration statement in JavaScript

var num;

What is the data type of this variable named color?

A. string

B. undefined

C. number

D. null

Question 4: let is a keyword in JavaScript to define local variable in block scope .(ECMA6 standards)

A. True

B. False

Question 5: int is the keyword used to define an integer variable in JavaScript.

A. True

B. False

Question 6: Given

var colors = [ 44.5, 'yellow', true ];

What is the value of colors[2] ?

A. true

B. undefined

C. 'yellow'

D. 44.5

Answer 1

1)  C. age is 305
2)  B. False
3)  B. undefined
4)  A. True
5)  B. False
6)  A. true