JavaScript-Developer-I Exam Question 176

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?
  • JavaScript-Developer-I Exam Question 177

    Given the HTML below:

    Which statement adds the priority-account CSS class to the Universal Containers row?
  • JavaScript-Developer-I Exam Question 178

    Referto 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?
  • JavaScript-Developer-I Exam Question 179

    Refer to the following array:
    Let arr = [1, 2, 3, 4, 5];
    Which three options result in x evaluating as [1,2]?
    Choose 3 answer
  • JavaScript-Developer-I Exam Question 180

    Refer to the code below:
    Function changeValue(obj) {
    Obj.value = obj.value/2;
    }
    Const objA = (value: 10);
    Const objB = objA;
    changeValue(objB);
    Const result = objA.value;
    What is the value of result after the code executes?