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NEW QUESTION 32
Refer to the following array:
Let arr1 = [ 1, 2, 3, 4, 5 ];
Which two lines of code result in a second array, arr2 being created such that arr2 is not
a reference to arr1?
- A. Let arr2 = Array.from(arr1);
- B. Let arr2 = arr1.sort();
- C. Let arr2 = arr1.slice(0, 5);
- D. Let arr2 = arr1;
Answer: A,C
NEW QUESTION 33
A developer wrote the following code:
01 let X = object.value;
02
03 try {
04 handleObjectValue(X);
05 } catch (error) {
06 handleError(error);
07 }
The developer has a getNextValue function to execute after handleObjectValue(), but
does not want to execute getNextValue() if an error occurs.
How can the developer change the code to ensure this behavior?
- A. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } finally {
08 getNextValue();
10 } - B. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 }
08 getNextValue(); - C. 03 try {
04 handleObjectValue(x)
05 …………………… - D. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } then {
08 getNextValue();
09 }
Answer: C
NEW QUESTION 34
Refer to the code below:
Let str = ‘javascript’;
Str[0] = ‘J’;
Str[4] = ‘S’;
After changing the string index values, the value of str is ‘javascript’. What is the reason for this value:
- A. Non-primitive values are mutable.
- B. Non-primitive values are immutable.
- C. Primitive values are immutable.
- D. Primitive values are mutable.
Answer: C
NEW QUESTION 35
Refer to the code below:
new Promise((resolve, reject) => {
const fraction = Math.random();
if( fraction >0.5) reject(“fraction > 0.5, ” + fraction);
resolve(fraction);
})
.then(() =>console.log(“resolved”))
.catch((error) => console.error(error))
.finally(() => console.log(” when am I called?”));
When does Promise.finally on line 08 get called?
- A. When resolved or rejected
- B. When resolved and settled
- C. WHen resolved
- D. When rejected
Answer: A
NEW QUESTION 36
……
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