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

Explanation:
* 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
JavaScript Errors – Throw and Try to Catch; number Property (Error) (JavaScript)