Quiz 5

Question 1

Case-Based Critical Thinking Questions
​
Case 12-1
​
Consider the following code that Wilson has written in HTML:
< html >
< head >
< title >Historic Documents
< /head >
< body >
< h1 >Dept. of History< /h1 >
< p >The <b>constitution</b> online.< /p >
< /body >
< /html >
Identify the headLevel value for the element node “Dept. of History".

a) 1
b) 3
c) 0
d) 2

Answer 1

c) 0

Question 2

Simon uses the function.apply(thisObj[,argArray] method to call a method from another object class. In this method, argArray is a(n) _____.

a) object calling the arguments of an array
b) argument consisting of arrays
c) array of argument values
d) method of argument values

Answer 2

c) array of argument values

Question 3

Identify a true statement about the sheet. parentStyleSheet property .

a) It describes the URL of the style sheet file or an empty text string for an embedded style sheet.
b) It describes a Boolean value to indicate whether the style sheet is enabled (false) or disabled (true).
c) It describes the object collection of style rules within the style sheet.
d) It describes the style sheet object containing the style sheet inserted via the @ import rule.

Answer 3

d) It describes the style sheet object containing the style sheet inserted via the @ import rule.

Question 4

To create a negative character class that matches any character not in the class, preface the list of characters with the _____ symbol.

a) &
b) #
c) ^
d) *

Answer 4

c) ^

Question 5

T/F Each parent node can contain only one child node.

Answer 5

F

Question 6

T/F To determine which option button has been checked by the user, you must examine the disabled property of each button.

Answer 6

F

Question 7

Identify the input field property or method that can be used to remove the focus from the input box.

a) input.pattern
b) input.required
c) input.focus()
d) input.blur()

Answer 7

d) input.blur()

Question 8

In many web forms, important data is stored within _____ so that the data is available to programmers but removed from the user’s control.

a) hidden fields
b) reference forms
c) event handlers
d) radio buttons

Answer 8

a) hidden fields

Question 9

The _____ property describes the embed or link element node that creates a style sheet.

a) sheet.rootnode
b) sheet.attributenode
c) sheet.ownerNode
d) sheet.elementnode

Answer 9

c) sheet.ownerNode

Question 10

Case based critical thinking
​
Case 13-4
​
Samantha is working on a web document. She wants to direct the browser to retrieve specific information about a URL, to reload the current page, and to load an entirely new page.
​
Which of the following commands can Samantha use to load a new page in the current window?

a) location.url = window
b) window.url = location
c) window.location = url
d) url.window = location

Answer 10

c) window.location = url

Question 11

Case based critical thinking
​
Case 13-1
​
Sarah wants to set the value of an input control. She applies the element.value = value; expression.
Which of the following methods should Sarah use to return the default value for the input box?

a) input.select()
b) input.focus()
c) input.defaultValue
d) input.value

Answer 11

c) input.defaultValue

Question 12

The _____ method discards the old node from node.

a) node. removeChild(old)
b) node .appendChild(old)
c) node. normalize(old)
d) node. replaceChild(new, old)

Answer 12

a) node. removeChild(old)

Question 13

Identify the syntax that determines how a new item is inserted into a nested list.

a) if ( headLevel !=== prevLevel ) {
// Append the list item to the current list

} else if ( headLevel < prevLevel ) {

// Start a new nested list

} else {

// Append the entry to a higher list

}
b)  if ( headLevel > prevLevel ) {
// Append the list item to the current list

} else if ( headLevel === prevLevel ) {

// Start a new nested list

} else {

// Append the entry to a higher list

}
c)   if ( headLevel === prevLevel ) {
// Append the list item to the current list

} else if ( headLevel > prevLevel ) {

// Start a new nested list

} else {

// Append the entry to a higher list

}
d)   if ( headLevel > prevLevel ) {
// Append the list item to the current list

} else if ( headLevel < prevLevel ) {

// Start a new nested list

} else {

// Append the entry to a higher list

}

Answer 13

c)   if ( headLevel === prevLevel ) {
// Append the list item to the current list

} else if ( headLevel > prevLevel ) {

// Start a new nested list

} else {

// Append the entry to a higher list

}

Question 14

t/f The select.name method returns the selection list field name.

Answer 14

t

Question 15

t/f One object can be nested within another.

Answer 15

t

Question 16

Identify the correct syntax to add methods to a custom object.

a) var objName = {
function: method () {

commands

}

}

b) Commands = {
method: function() {

var objName

}

}

c) var objName = {
method: function() {

commands

}

}
d)   var objName = {
function() {

method()

}

}

Answer 16

c) var objName = {
method: function() {

commands

}

}

Question 17

For options buttons and check boxes, use the _____ event handler in response to the user clicking those elements.

a) onselect
b) onreset
c) oninput
d) onclick

Answer 17

d) onclick

Question 18

Which of the following commands is used to create a custom object using the new operator?

a) var objName = new Object();
object. property = value;

object.method = function() {

commands

};

b) var objName = value;
object. Name = value;

object.property = function() {

commands

};

c) var method = new Object();
object. property = value;

object.objName = function() {

commands

};

d) var objName = Object();
object. Name = Object();

object.method = function() {

commands

};

Answer 18

a) var objName = new Object();
object. property = value;

object.method = function() {

commands

};

Question 19

The _____ option from the toLocaleString() method indicates whether to use a thousands grouping symbol (true) or not (false) .

a) useGroup: Boolean
b) style: type
c) maximumSignificantDigits: num
d) minimumSignficantDigits: num

Answer 19

a) useGroup: Boolean

Question 20

t/f The value associated with a checked box is stored in the name property of the check box object.

Answer 20

f

Question 21

Which of the following methods is applied to sort any array in random order?

a) object create() method
b) console.log() method
c) shuffle() method
d) sort() method

Answer 21

c) shuffle() method

Question 22

Which of the following properties returns the Boolean value true when an element contains an attribute?
node .setAttribute

a) node .setAttribute
b) node.Attribute
c) node .hasAttribute
d) node .getAttribute

Answer 22

c) node .hasAttribute

Question 23

Identify the name:value pair that includes a function name and its commands, which is used to add methods to a custom object.

a) var objName = {
method: function() {

commands

}

}
b) var obj= {
function() {

commands

}

}

c) var objName = {
command. function() {

method()

}

}

d) var objName = {
function: method() {

commands

}

}

Answer 23

a) var objName = {
method: function() {

commands

}

}

Question 24

t/f Using prototypes, any object class inherits the properties and methods from another class.

Answer 24

t

Question 25

t/f The showName() method provides another way to create objects that are based on existing prototypes.

Answer 25

f