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Q51. You develop an application to host user-generated HTML and JavaScript content. 

A common error handler in your application must process all unhandled errors. 

You need to implement global error handling for the application. 

Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: A

Q52. 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. <input name="email" type="url"/> 

B. <input name="email" type="text" required="required"/> 

C. <input name="email" type="text"/> 

D. <input name="email" type="email"/> 

Answer: D 

Q53. 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 

Q54. You develop an HTML5 webpage. You have the following HTML markup: 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: D

Q55. You develop a webpage by using HTML5. You create the following markup and code: (Line numbers are included for reference only.) 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: A

Q56. You are developing an HTML5 web application that displays stock information. 

The application loads information from a web service by using AJAX. 

The following code defines a Stock object and loads stock data. 

You need to implement the loadStock function. Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: A

Q57. You develop a webpage with a standard input control by using HTML5. 

The input control must display the text Enter your given name, as shown below: 

When a user selects the input control, the text must disappear. 

You need to create the input control. 

Which input control should you use? 

A. <input name="GivenName" value=" Enter your given name" /> 

B. <input name ="GivenName" default=" Enter your given name" /> 

C. <input name="GivenName" text=" Enter your given name" /> 

D. <input name="GivenName" placeholder=" Enter your given name" /> 

Answer: D

Q58. 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 ( ){ 

alertt'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: BC 

Q59. You are developing a web page that has a group of HI and H2 elements. The page also includes a CSS class named underlineMe. 

You have the following requirements: 

The font color of all H1 and H2 elements must be changed to red. 

The CSS class underlineMe must be applied to all H1 and H2 elements. 

You need to update the web page to meet the requirements. Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: D 

Q60. You are creating a blog site by using HTML5 and JavaScript. An inline frame enables users to post comments. It is possible for users to inject malicious scripts into their comments. 

You need to minimize the ability for malicious scripts to execute on the site. 

Which line of code should you use? 

A. <iframe sandbox src="frame1.htmlnX/iframe> 

B. <iframe seamless="allowscripts" src="frame1.html"<>/iframe> 

C. <iframe seamless src="frame1.html"></iframe> 

D. <iframe sandbox="allowscripts" src"frame1.html"x/iframe> 

Answer: A