READ Free Dumps For Microsoft- 70-480
| Question ID 14996 | You are developing a website that helps users locate theaters in their area from a browser.
You created a function named findTheaters ().
The function must:
✑ Get the current latitude and longitude of the user's device
✑ Pass the user's location to findTheaters()
The user needs to access the geolocation information from the browser before searching
for theaters.
Which code segment should you use?
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| Option A | Option A
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| Option B | Option B
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| Option C | Option C
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| Option D | Option D
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| Correct Answer | C |
Explanation Explanation: * The getCurrentPosition method retrieves the current geographic location of the device. The location is expressed as a set of geographic coordinates together with information about heading and speed. The location information is returned in a Position object. syntax of this method: getCurrentPosition(showLocation, ErrorHandler, options); where showLocation : This specifies the callback method that retrieves the location information. This method is called asynchronously with an object corresponding to the Position object which stores the returned location information. ErrorHandler : This optional parameter specifies the callback method that is invoked when an error occurs in processing the asynchronous call. This method is called with the PositionError object that stores the returned error information. * e example below is a simple Geolocation example returning the latitude and longitude of the user's position: Example Example explained: Check if Geolocation is supported If supported, run the getCurrentPosition() method. If not, display a message to the user If the getCurrentPosition() method is successful, it returns a coordinates object to the function specified in the parameter ( showPosition ) The showPosition() function gets the displays the Latitude and Longitude The example above is a very basic Geolocation script, with no error handling. Reference: HTML5 Geolocation; Geolocation getCurrentPosition() API
| Question ID 14997 | You are developing a web page that performs CPU-intensive calculations. A web worker
processes these calculations on a separate background thread. The process is instantiated
from the web page.
You need to stop the web worker process after the calculations are completed.
Which two actions can you perform to achieve this goal? (Each correct answer presents a
complete solution. Choose two.)
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| Option A | From the web page, call the close() method.
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| Option B | From the web worker process, call the terminate() method.
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| Option C | From the web page, call the terminate() method.
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| Option D | From the web worker process, call the close() method.
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| Correct Answer | C,D |
Explanation Explanation: Terminating a worker If you need to immediately terminate a running worker, you can do so by calling the worker's terminate() method: myWorker.terminate(); The worker thread is killed immediately without an opportunity to complete its operations or clean up after itself. Workers may close themselves by calling their own close method: close(); Reference: Using Web Workers