Universal Container(UC) just launched a new landing page, but users complain that the website is slow. A developer found some functions that cause this problem. To verify this, the developer decides to do everything and log the time each of these three suspicious functions consumes.
console.time(‘Performance’); maybeAHeavyFunction(); thisCouldTakeTooLong(); orMaybeThisOne(); console.endTime(‘Performance’);
Which function can the developer use to obtain the time spent by every one of the three functions?
Correct Answer:A
The developer wants to test the array shown: const arr = Array(5).fill(0)
Which two tests are the most accurate for this array ? Choose 2 answers:
Correct Answer:AB
Refer to code below: console.log(0);
setTimeout(() => ( console.log(1);
});
console.log(2); setTimeout(() => { console.log(3);
), 0);
console.log(4);
In which sequence will the numbers be logged?
Correct Answer:C
Teams at Universal Containers(UC) work on multiple JavaScript projects at the same time. UC is thinking about reusability and how each team can benefit from the work of others. Going open-source or public is not an option at this time.
Which option is available to UC with npm?
Correct Answer:A
Given code below: setTimeout (() => ( console.log(1);
). 0);
console.log(2);
New Promise ((resolve, reject )) = > ( setTimeout(() => ( reject(console.log(3));
). 1000);
)).catch(() => ( console.log(4);
));
console.log(5);
What is logged to the console?
Correct Answer:B