HTML DOM

Question 1

Consider the following code snippet:

What does the min means?

Select one:
a. Minimized version
b. Miniature
c. Minimized parameter
d. Minimum value

Answer 1

a. Minimized version

Question 2

Which of the following are the different ways of invoking jQuery() function.

i) invoke $() is to pass a CSS selector to it
ii) invoke $() is to pass an element or document or window object
iii) invoke $() is to pass a string of JavaScript code
Select one:
a. i, ii only
b. i, ii and iii
c. None of these

Answer 2

a. i, ii only

Question 3

Here is a jquery code:

$(document).ready(function(){});

Why do we place all jQuery methods inside this code?

Select one:
a. Because jQuery is never compiled
b. It shows where jQuery starts and ends
c. To enable the DOM to load jQuery
d. To prevent jQuery code from running before the document is fully loaded

Answer 3

d. To prevent jQuery code from running before the document is fully loaded

Question 4

jQuery uses CSS selectors to select elements?
Select one:
a. True
b. False

Answer 4

a. True

Question 5

Look at the following selector: $(“div”). What does it select?
Select one:
a. The first div elements
b. All div elements

Answer 5

b. All div elements

Question 6

Look at the following selector: $(“p#intro”). What does it selct?
Select one:
a. The p element with id = “intro”
b. All the p elements with class = “intro”

Answer 6

a. The p element with id = “intro”

Question 7

Triggers or binds a function to the error events of the selected elements.
Select one:
a. click()
b. error()
c. evnet.pageX
d. click.error()

Answer 7

b. error()

Question 8

What is the correct jQuery code to set the background color of all p elements to red?
Select one:
a. $(“p”).style(“background-color”, “red”);
b. $(“p”).layout(“background-color”, “red”);
c. $(“p”).css(“background-color”, “red”);
d. $(“p”).manipulate(“background-color”, “red”);

Answer 8

c. $(“p”).css(“background-color”, “red”);

Question 9

What scripting language is jquery written in?
Select one:
a. VBScript
b. JavaScript
c. C#
d. C++

Answer 9

b. JavaScript

Question 10

When do you use the $(this) code?
Select one:
a. When an HTML element will reference its own action.
b. When an HTML element will reference its parent element’s action
c. When an HTML element will reference the entire document
d. None of the above.

Answer 10

a. When an HTML element will reference its own action.

Question 11

Which built-in method returns the character at the specified index?
Select one:
a. characterAt()
b. getCharAt()
c. charAt()
d. None of the above

Answer 11

c. charAt()

Question 12

Which jQuery function is used to prevent code from running, before the document is finished loading?
Select one:
a. $(body).onload()
b. $(document).load()
c. $(document).ready()

Answer 12

c. $(document).ready()

Question 13

Which jQuery method is used to hide selected elements?
Select one:
a. display(none)
b. hidden()
c. visible(false)
d. hide()

Answer 13

d. hide()

Question 14

Which jQuery method is used to set one or more style properties for selected elements?
Select one:
a. html()
b. css()
c. style()

Answer 14

b. css()

Question 15

Which of the following are the features of jQuery?
Select one:
a. Efficient query method for finding the set of document elements
b. Expressive syntax for referring to elements in the document
c. Useful set of methods for manipulating selected elements
d. All of the mentioned

Answer 15

d. All of the mentioned

Question 16

With jQuery, look at the following selector : $(“div.intro”). What does it select?
Select one:
a. The first div element with class = “intro”
b. All the div elements with id = “intro”
c. All the div elements with class = “intro”
d. The first div element with id = “intro”

Answer 16

c. All the div elements with class = “intro”