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Category: 70-480 (v.6)

Exam 70-480: Programming in HTML5 with JavaScript and CSS3 (updated July 19th, 2017)

How should you write the code?

DRAG DROP
You are developing an online shopping application that accepts credit cards for payment.
If the credit card number is invalid, the application must:
Generate an error
Assign “200” to the error number
Assign “Invalid” to the error description
You need to write the code that meets the requirements.
How should you write the code? (To answer, drag the appropriate code segment or segments to the correct
location 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.)
Select and Place:

Which two actions will achieve this goal?

You are developing a web application that consumes services from a third-party application. A web worker
processes the third-party application requests in the background. A page in the application instantiates the web
worker process.
You need to establish two-way communications between the web worker process and the page.
Which two actions will achieve this goal? (Each correct answer presents a complete solution. Choose two.)

Which code segment should you use?

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?

How should you build the code segment?

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.)
Hot Area:

Which two code segments can you use?

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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