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          P r o g  r a m  m  i n g  in HTML5 with JavaScript and CSS3
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Question: 1 
 
DRAG DROP 
You are validating user input by using JavaScript and regular expressions. 
A group of predefined regular expressions will validate two input fields: 
An email address in a function named validateEmail (for example, [email protected]) 
A nine-digit number that allows optional hyphens after the second and fifth character in a function 
named validateSSN(for example, 555555555 or 555-55-5555) 
You need to use the correct expression to validate the input. 
Which expression should you insert into each function? (To answer, drag the appropriate regular 
expression statement to the correct location. Each regular expression statement may be used once, 
more than once, or not at all. You may need to drag the split bar between panes or scroll to view 
content.) 
 
 
 
Answer:  
 
 
 
 
Question: 2 
 
You are developing a customer web form that includes the following HTML. 
 
A customer must enter a valid age in the text box prior to submitting the form. 
You need to add validation to the control. 
Which code segment should you use? 
 
 
 
A. Option A 
B. Option B 
C. Option C 
D. Option D 
 
Answer: D 
 
Return value 
 
A string containing the value of the element, or an array of strings if the element can have multiple 
values 
 
Question: 3 
 
You are developing a customer contact form that will be displayed on a page of a company's website. 
The page collects information about the customer. 
If a customer enters a value before submitting the form, it must be a valid email address. 
You need to ensure that the data validation requirement is met. 
What should you use? 
 
A.  
B.  
C.  
D.  
 
Answer: D 
 
Example: 
 
  E-mail: 
 
 
Reference: 
http://www.w3schools.com/html/html5_form_input_types.asp 
 
Question: 4 
 
DRAG DROP 
You are developing a form that captures a user's email address by using HTML5 and jQuery. 
The form must capture the email address and return it as a query string parameter. The query string 
parameter must display the @ symbol that is used in the email address. 
You need to implement this functionality. 
How should you develop the form? (To answer, drag the appropriate code segment to the correct target 
or targets in the answer area. Each code segment may be used once, more than once, or not at all. You 
may need to drag the split bar between panes or scroll to view content.) 
 
 
 
Answer:  
 
 
Explanation: 
* The serialize() method creates a URL encoded text string by serializing form values. 
You can select one or more form elements (like input and/or text area), or the form element itself. 
The serialized values can be used in the URL query string when making an AJAX request. 
Example: $("form").serialize()); 
* decodeURIComponent 
The decodeURIComponent() function decodes a URI component. 
Return Value: A String, representing the decoded URI 
Incorrect: 
Not decodeURI: 
decodeURI is intended for use on the full URI. 
 
decodeURIComponent is intended to be used on .. well .. URI components that is any part that lies 
between separators (; / ? : @ & = + $ , #). 
Reference: jQuery serialize() Method 
http://www.w3schools.com/jquery/ajax_serialize.asp 
http://www.w3schools.com/jsref/jsref_encodeuri.asp 
 
Question: 5 
 
You are developing an application that consumes a Windows Communication Foundation (WCF) service. 
The application interacts with the service by using the following code. (Line numbers are included for 
reference only.) 
 
You need to authenticate to the WCF service. 
What should you do? 
 
A. At line 11, add the following lines of code. 
,username: yourusername 
,password: yourpassword 
B. At line 11, add the following line of code. 
,credentials: prompt 
C. At line 06, replace the code with the following line of code. 
url: "http://contoso.com/Service.svc/GetCountry? 
 Username=username&password=password", 
D. At line 11, add the following line of code. The username and password will be stored in an XML file. 
,credentials: credentials.xml 
 
Answer: C 
 
 
Question: 6 
 
You are developing a web page that enables customers to upload documents to a web server. The page 
includes an HTML5 PROGRESS element named progressBar that displays information about the status of 
the upload. 
The page includes the following code. (Line numbers are included for reference only.) 
 
An event handler must be attached to the request object to update the PROGRESS element on the page. 
You need to ensure that the status of the upload is displayed in the progress bar. 
Which line of code should you insert at line 03? 
 
A. xhr.upload.onloadeddata = 
B. xhr.upload.onplaying = 
C. xhr.upload.onseeking = 
D. xhr.upload.onprogress = 
 
Answer: D 
 
Example: 
xhr.upload.onprogress = function(evt) 
{ 
    if (evt.lengthComputable) 
    { 
        var percentComplete = parseInt((evt.loaded / evt.total) * 100); 
        console.log("Upload: " + percentComplete + "% complete") 
    } 
}; 
Reference: 
http://stackoverflow.com/questions/3352555/xhr-upload-progress-is-100-from-the-start 
 
Question: 7 
 
You are developing a customer web form that includes the following HTML. 
 
Information from the web form is submitted to a web service. The web service returns the following 
JSON object. 
{ 
 
"Confirmation": "1234", 
"FirstName": "John" 
} 
You need to display the Confirmation number from the JSON response in the txtValue label field. 
Which JavaScript code segment should you use? 
 
A. $("#txtValue").val = (JSONObject.Confirmation); 
B. $("#txtValue").val (JSONObject.Confirmation); 
C. $("#txtValue").text = (JSONObject.Confirmation); 
D. $("#txtValue").text (JSONObject.Confirmation); 
 
Answer: D 
 
Incorrect: 
not A, not B: A label object has no value attribute. 
Reference: 
http://api.jquery.com/text/ 
 
Question: 8 
 
HOTSPOT 
You are developing a web application that retrieves data from a web service. The data being retrieved is 
a custom binary datatype named bint. The data can also be represented in XML. 
Two existing methods named parseXml() and parseBint() are defined on the page. 
The application must: 
Retrieve and parse data from the web service using binary format if possible 
Retrieve and parse the data from the web service using XML when binary format is not possible 
You need to develop the application to meet the requirements. 
What should you do? (To answer, select the appropriate options from the drop-down lists in the answer 
area.) 
 
 
 
 
 
Answer:  
 
 
 
* accepts : 'application/bint, text/xml' 
accepts:'application/bin,text/xml' to accept only XML and binary content in HTML responses. 
* Use the following condition to check if the html response content is 
binary: If(request.getResponseHeader("Content-Type")=="application/bint" 
*       var request = $.ajax({ 
            uri:'/', 
            accepts: 'application/bint, text/xml', 
            datafilter: function(data,type){ 
                if(request.getResponseHeader("Content-Type")=="application/bint") 
                   return parseBint(data); 
                else 
                   return parseXml(); 
                 },             
 
            success: function (data) { 
              start(data); 
            } 
        }); 
 
Question: 9 
 
You are developing a customer web form that includes the following HTML. 
 
A customer must enter a value in the text box prior to submitting the form. 
You need to add validation to the text box control. 
Which HTML should you use? 
 
A.  
B.  
C.  
D.  
 
Answer: A 
 
Definition and Usage 
The required attribute is a boolean attribute. 
When present, it specifies that an input field must be filled out before submitting the form. 
Example 
An HTML form with a required input field: 
 
  Username:  
 
 
Username:  
Reference: HTML  required Attribute 
http://www.w3schools.com/tags/att_input_required.asp 
 
Question: 10 
 
DRAG DROP 
You are developing a web page for runners who register for a race. The page includes a slider control 
that allows users to enter their age. 
You have the following requirements: 
All runners must enter their age. 
Applications must not be accepted from runners less than 18 years of age or greater than 90 years. 
The slider control must be set to the average age (37) of all registered runners when the page is first 
displayed. 
You need to ensure that the slider control meets the requirements. 
 
What should you do? (To answer, drag the appropriate word or number to the correct location in the 
answer area. Each word or number may be used once, more than once, or not at all. You may need to 
drag the split bar between panes or scroll to view content.) 
 
 
Answer:  
 
 
Box 1-3: The  is used for input fields that should contain a value within a range. 
Example 
 
 
Box 4-5: Use the value attribute to set the default value 
Box 6:  Definition and Usage 
The required attribute is a boolean attribute. 
When present, it specifies that an input field must be filled out before submitting the form. 
Example 
  Username:  
Reference: HTML Input Types 
http://www.w3schools.com/html/html_form_input_types.asp 
 
Question: 11 
 
You are developing an HTML5 web application that displays the current temperature whenever a button 
is clicked. The following code provides this functionality. 
 
When the temperature is loaded, the status property on the loader instance does not change. 
You need to ensure that the status property on the loader instance is updated when the temperature is 
loaded. 
Which code segment should you use to replace the Loader function? 
 
 
 
A. Option A 
B. Option B 
C. Option C 
D. Option D 
 
Answer: A 
 
Incorrect: 
not D: window.status property 
The status property sets the text in the status bar at the bottom of the browser, or returns the 
previously set text. 
 
 
Question: 12 
 
You are creating a class named Consultant that must inherit from the Employee class. The Consultant 
class must modify the inherited PayEmployee method. The Employee class is defined as follows. 
function Employee() {} 
Employee.prototype.PayEmployee = function ( ){ 
alert('Hi there!'); 
} 
Future instances of Consultant must be created with the overridden method. 
You need to write the code to implement the Consultant class. 
Which code segments should you use? (Each correct answer presents part of the solution. Choose two.) 
 
A. Consultant.PayEmployee = function () 
{ 
alert('Pay Consulant'); 
} 
B. Consultant.prototype.PayEmployee = function () 
{ 
alert('Pay Consultant'); 
} 
C. function Consultant () { 
Employee.call(this); 
} 
Consultant.prototype = new Employee(); 
Consultant.prototype.constructor = Consultant; 
D. function Consultant() { 
Employee.call(this); } 
Consultant.prototype.constructor = Consultant.create; 
 
Answer: B, C 
 
* Object.prototype.constructor 
Returns a reference to the Object function that created the instance's prototype. Note that the value of 
this property is a reference to the function itself, not a string containing the function's name. The value 
is only read-only for primitive values such as 1, true and "test". 
* The constructor property is created together with the function as a single property of func.prototype. 
Reference: Object.prototype.constructor 
 
Question: 13 
 
You are modifying an existing web page. The page is being optimized for accessibility. The current page 
contains the following HTML. 
 
 
Standards-compliant screen readers must be able to identify the links contained within the navigation 
structure automatically. 
You need to create the navigation link structure in the page. 
With which container tags should you wrap the existing markup? 
 
A.  
B.  
C.  
D.  
 
Answer: C 
 
HTML  Tag 
Example 
A set of navigation links: 
 
HTML | 
CSS | 
JavaScript | 
jQuery 
 
Reference: HTML  Tag 
http://www.w3schools.com/tags/tag_nav.asp 
 
Question: 14 
 
HOTSPOT 
You are developing an airline reservation website by using HTML5 and JavaScript. A page on the site 
allows users to enter departure and destination airport information and search for tickets. 
You have the following requirements: 
Users must be able to save information in the application about their favorite destination airport. 
The airport information must be displayed in the destination text box whenever the user returns to the 
page. 
You need to develop the site to meet the requirements. 
Which lines of code should you use? (To answer, select the appropriate options from the drop-down 
lists in the answer area.) 
 
 
 
 
 
Answer:  
 
 
 
Explanation: 
* retrieve localStorage.destination 
* store localStorage.destination 
 
Question: 15 
 
HOTSPOT 
You are developing an HTML5 web application for displaying encyclopedia entries. 
Each encyclopedia entry has an associated image that is referred to in the entry. 
You need to display the image by using the correct semantic markup. 
 
What should you do? (To answer, select the appropriate options from the drop-down list in the answer 
area.) 
 
 
 
 
Answer:  
 
 
 
Explanation: 
The  element 
The  element is intended to be used in conjunction with the  element to mark up 
diagrams, illustrations, photos, and code examples (among other things). 
 
Example: 
 
 
A cheeky macaque, Lower Kintaganban River, Borneo. Original by Richard Clark 
 
Reference: The figure & figcaption elements 
 
Question: 16 
 
You are creating a JavaScript object that represents a customer. 
You need to extend the Customer object by adding the GetCommission() method. 
You need to ensure that all future instances of the Customer object implement the GetCommission() 
method. 
Which code segment should you use? 
 
 
A. Option A 
B. Option B 
C. Option C 
D. Option D 
 
Answer: D 
 
* Object.prototype.constructor 
Returns a reference to the Object function that created the instance's prototype. Note that the value of 
this property is a reference to the function itself, not a string containing the function's name. The value 
is only read-only for primitive values such as 1, true and "test". 
 
* The constructor property is created together with the function as a single property of func.prototype. 
Reference: Object.prototype.constructor 
 
Question: 17 
 
You are developing a web form that includes the following code. 
 
When a user selects the check box, an input text box must be added to the page dynamically. 
You need to ensure that the text box is added. 
Which function should you use? 
 
 
A. Option A 
B. Option B 
C. Option C 
D. Option D 
 
 
Answer: B 
 
We create a now div element with the textbox. 
We then use  appendChild() method appends this node as the last child the input node divname. 
Reference: HTML DOM appendChild() Method 
 
Question: 18 
 
HOTSPOT 
An HTML page has a canvas element. 
You need to draw a red rectangle on the canvas element dynamically. The rectangle should resemble 
the following graphic. 
 
How should you build the code segment? (To answer, select the appropriate options from the drop-
down lists in the answer area.) 
 
 
 
 
Answer:  
 
 
 
* getElementById 
The getElementById() method accesses the first element with the specified id. We use it to get a 
reference to the canvas. 
* context.fillStyle. 
Example: 
Define a red fill-color for the rectangle: 
JavaScript: 
var c=document.getElementById("myCanvas"); 
var ctx=c.getContext("2d"); 
ctx.fillStyle="#FF0000"; 
ctx.fillRect(20,20,150,100); 
 
Reference: HTML canvas fillStyle Property 
 
Question: 19 
 
You are developing an HTML5 page that has an element with an ID of logo. The page includes the 
following HTML. 
 
Logo: 
 
 
 
You need to move the logo element lower on the page by five pixels. 
Which lines of code should you use? (Each correct answer presents part of the solution. Choose two.) 
 
A. document.getElementById("logo") .style.position = "relative"; 
B. document.getElementByld("logo").Style.top = "5px"; 
C. document.getElementById("logo").style.top = "-5px"; 
D. document.getElementById("logo").style.position = "absolute"; 
 
Answer: A, B 
 
* style.position = "relative"; 
The element is positioned relative to its normal position, so "left:20" adds 20 pixels to the element's 
LEFT position. 
* For relatively positioned elements, the top property sets the top edge of an element to a unit 
above/below its normal position. 
Example: Example 
Set the top edge of the image to 5px below the top edge of its normal position: 
img { 
    position: relative; 
    top: 5px; 
} 
Reference: CSS position Property; CSS top Property 
http://www.w3schools.com/cssref/pr_class_position.asp 
http://www.w3schools.com/cssref/pr_pos_top.asp 
 
Question: 20 
 
You are developing a web page by using HTML5 and C5S3. The page includes a  tag with the ID set 
to validate. 
When the page is rendered, the contents of the  tag appear on a line separate from the content 
above and below it. The rendered page resembles the following graphic. 
 
 
The page must be rendered so that the  tag is not forced to be separate from the other content. 
The following graphic shows the correctly rendered output. 
 
You need to ensure that the page is rendered to meet the requirement. 
Which line of code should you use? 
 
A. document.getElementById("validate").style.display = "inline"; 
B. document.getElementById("validate").style.margin = "0"; 
C. document.getElementById("validate").style.padding = "0"; 
D. document.getElementSyId("validate").style.display = "block"; 
 
Answer: A 
 
* display: value; 
value: inline 
Default value. Displays an element as an inline element (like ) 
* Example 
Display  elements as inline elements: 
p.inline { 
    display: inline; 
} 
Reference: CSS display Property 
http://www.w3schools.com/cssref/pr_class_display.asp 
 
Question: 21 
 
HOTSPOT 
You are creating a web worker for an HTML5 application. 
The following tasks must be performed from within the web worker: 
Register an event listener for the web worker 
Start and stop the web worker 
You need to define a function that performs the required tasks. 
Which code segment should you use? (To answer, select the appropriate option from the drop-down list 
in the answer area.) 
 
 
 
 
 
Answer:  
 
 
 
* addEventListener 
The addEventListener() method attaches an event handler to the specified element. 
 
In context of a worker, both self and this refer to the global scope. The worker can either add an event 
listener for the message event, or it can define the onmessage handler to listen for any messages sent 
by the parent thread. 
* postmessage 
Pass a message to the worker. 
* close() 
Terminating Workers 
Workers are resource-intensive; they are OS-level threads. Therefore, you do no want to create a large 
number of worker threads, and you should terminate the web worker after it completes its work. 
Workers can terminate themselves, like this: 
self.close(); 
Reference: HTML DOM addEventListener() Method; The Basics of Web Workers 
 
Question: 22 
 
You are creating a JavaScript function that displays the name of a web application. 
You declare the following button element. 
 
When a user clicks the button, a JavaScript function named About must be called. 
You need to create an event handler that calls the About function when the button is clicked. 
Which two code segments can you use? (Each correct answer presents a complete solution. Choose 
two.) 
 
 
A. Option A 
B. Option B 
C. Option C 
D. Option D 
 
Answer: C, D 
 
C: addEventListener 
 
The addEventListener() method attaches an event handler to the specified element. 
In context of a worker, both self and this refer to the global scope. The worker can either add an event 
listener for the message event, or it can define the onmessage handler to listen for any messages sent 
by the parent thread. 
D: attachEvent method 
Registers an event handler function (event listener) for the specified event on the current object. 
Reference: addEventListener method; attachEvent method 
http://help.dottoro.com/ljeuqqoq.php 
http://help.dottoro.com/ljinxrmt.php 
 
Question: 23 
 
HOTSPOT 
You are creating a function by using JavaScript. 
The function accepts an object as the parameter and returns a string that identifies the data type of the 
object. 
You have the following requirements: 
The function must return "Number" if the object is a number. 
The function must return "String" if the object is a string. 
The function must return "Unknown" if the object is neither a number nor a string. 
You need to implement the function to meet the requirements. 
How should you build the code segment? (To answer, select the appropriate options from the drop-
down lists in the answer area.) 
 
 
 
 
 
Answer:  
 
 
 
* Use the switch statement to select one of many blocks of code to be executed. 
Syntax 
switch(expression) { 
    case n: 
        code block 
        break; 
 
    case n: 
        code block 
        break; 
    default: 
        default code block 
} 
This is how it works: 
The switch expression is evaluated once. 
The value of the expression is compared with the values of each case. 
If there is a match, the associated block of code is executed. 
*  Object.prototype.constructor 
Returns a reference to the Object function that created the instance's prototype. Note that the value of 
this property is a reference to the function itself, not a string containing the function's name. The value 
is only read-only for primitive values such as 1, true and "test". 
* Description 
All objects inherit a constructor property from their prototype: 
var o = {}; 
o.constructor === Object; // true 
var a = [];a.constructor === Array; // true 
var n = new Number(3); 
n.constructor === Number; // true 
* The constructor property is created together with the function as a single property of func.prototype. 
Reference: JavaScript Switch Statement;Object.prototype.constructor 
 
Question: 24 
 
You need to test the value of the following variable in JavaScript. 
var length = "75"; 
A block of code must execute if the length equals 75 regardless of the data type. 
You need to use the statement that meets this requirement. 
Which lines of code should you use? (Each correct answer presents a complete solution. Choose two.) 
 
A. if (length = = = 75) 
B. if (length = = 75) 
C. if (length! = 75) 
D. if (length = = "75") 
 
Answer: B, D 
 
When comparison is made using double-equals operator (==), it will check the values of variable and 
convert them to a common type and returns true if both are equals. So comparing number with string 
having the same value will return true. 
Examples: 
examples: 
1 
console.log(23 == "23"); // true 
 
2 
console.log(1 == true); // true 
Incorrect: 
not ===: This is “strict” or “identical” equality. 
Reference: JavaScript Triple Equals Operator vs Double Equals Operator ( === vs == ) 
 
Question: 25 
 
You are developing an application that uses a third-party JavaScript library named doWork(). 
The library occasionally throws an "object is null or undefined" error with an error code of 
-2146823281. 
The application must: 
Extract and handle the exceptions thrown by doWork() 
Continue normal program execution if other exceptions occur 
You need to implement the requirements. 
Which code segment should you use? 
 
 
A. Option A 
B. Option B 
C. Option C 
D. Option D 
 
 
Answer: C 
 
* The try statement lets you test a block of code for errors. 
The catch statement lets you handle the error. 
The JavaScript statements try and catch come in pairs: 
try { 
    Block of code to try 
} 
catch(err) { 
    Block of code to handle errors 
} 
* object.number [= errorNumber] 
Returns or sets the numeric value associated with a specific error. The Error object's default property is 
number. 
* Example: 
The following example causes an exception to be thrown and displays the error code that is derived 
from the error number. 
try 
    { 
    // Cause an error. 
    var x = y; 
    } 
catch(e) 
    { 
    document.write ("Error Code: "); 
    document.write (e.number & 0xFFFF) 
    document.write (""); 
 
    document.write ("Facility Code: ") 
    document.write(e.number>>16 & 0x1FFF) 
    document.write (""); 
    document.write ("Error Message: ") 
    document.write (e.message) 
    } 
The output of this code is as follows. 
Error Code: 5009 
Facility Code: 10 
Error Message: 'y' is undefined 
Reference: JavaScript Errors - Throw and Try to Catch; number Property (Error) (JavaScript)