JavaScript Developer I V2

A developer is leading the creation of a new browser application that will serve a single page application. The team wants to use a new web framework Minimalsit.js. The Lead developer wants to advocate for a more seasoned web framework that already has a community around it. Which two frameworks...

Refer to the code below: Function Person (firstName, lastName, eyecolor) { this.firstName =firstName; this.lastName = lastName; this.eyeColor = eyeColor; } Person.job = ‘Developer’; const myFather = new Person(‘John’, ‘Doe’); console.log(myFather.job); What is the output after the code executes?A . ReferenceError: eyeColor is not definedB . ReferenceError: assignment to undeclared variable...

A team that works on a big project uses npm to deal with projects dependencies. A developer added a dependency does not get downloaded when they execute npm install. Which two reasons could be possible explanations for this? Choose 2 answersA . The developer missed the option --add when adding...

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?A . 21435B . 25134C . 12435D ....

Given the following code: Counter = 0; const logCounter = () => { console.log(counter); ); logCounter(); setTimeout(logCOunter, 1100); setInterval(() => { Counter++ logCounter(); }, 1000); What is logged by the first four log statements?A . 0012B . 0123C . 0112D . 0122View AnswerAnswer: C

Refer to the code snippet: Function getAvailabilityMessage(item) { If (getAvailability(item)){ Var msg =”Username available”; } Return msg; } A developer writes this code to return a message to user attempting to register a new username. If the username is available, variable. What is the return value of msg hen getAvailabilityMessage...

At Universal Containers, every team has its own way of copying JavaScript objects. The code Snippet shows an implementation from one team: Function Person() { this.firstName = “John”; this.lastName = ‘Doe’; This.name =() => ( console.log(‘Hello $(this.firstName) $(this.firstName)’); )} Const john = new Person (); Const dan =JSON.parse(JSON.stringify(john)); dan.firstName =’Dan’;...

A developer needs to test this function: 01const sum3 = (arr) => ( 02if (!arr.length) return 0, 03if (arr.length === 1) return arr[0], 04if (arr.length === 2) return arr[0]+ arr[1], 05 return arr[0] + arr[1] + arr[2], 06 ); Which two assert statements are valid tests for the function? Choose...

catch( arr => ( 10 console.log(“Race is cancelled.”, err); 11 )); What is the value of result when Promise.race executes?A . Car 3 completed the race.B . Car 1 crashed in the race.C . Car 2 completed the race.D . Race is cancelled.View AnswerAnswer: C

is below: <input type=”file” onchange=”previewFile()”> <img src=”” height=”200” alt=”Image Preview…”/> The JavaScript portion is: 01 functionpreviewFile(){ 02 const preview = document.querySelector(‘img’); 3 const file = document.querySelector(‘input[type=file]’).files[0]; 4 //line 4 code 5 reader.addEventListener(“load”, () => { 6 preview.src = reader.result; 7 },false); 08 //line 8 code 09 } In lines 04...