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?

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.)

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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.)
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You are creating a JavaScript function that displays the name of a web application.
You declare the following button element.
<input type=”button” id= “About” value=”About” />
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.)

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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.)
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You are developing a web page by using HTML5 and C5S3. The page includes a <div> tag with the ID set to
validate.
When the page is rendered, the contents of the <div> 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 <div> 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?

You are developing an HTML5 page that has an element with an ID of logo. The page includes the following
HTML.<div>
Logo:<br>
<div id=”logo”>
</div>
</div>
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.)

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?

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?

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.)
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