JAVASCRIPT-DEVELOPER-I VALID TEST ONLINE, NEW JAVASCRIPT-DEVELOPER-I STUDY GUIDE

JavaScript-Developer-I Valid Test Online, New JavaScript-Developer-I Study Guide

JavaScript-Developer-I Valid Test Online, New JavaScript-Developer-I Study Guide

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Tags: JavaScript-Developer-I Valid Test Online, New JavaScript-Developer-I Study Guide, JavaScript-Developer-I Test Cram Pdf, JavaScript-Developer-I Exam Cost, Instant JavaScript-Developer-I Download

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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q41-Q46):

NEW QUESTION # 41
There is a new requirement for a developer to implement a currPrice method that will return the current price of the item or sales..

What is the output when executing the code above

  • A. 50
    80
    50
    72
  • B. 50
    80
    Uncaught Reference Error:this,discount is undefined
    72
  • C. 50
    80
    72
  • D. 50
    Uncaught TypeError: saleItem,desrcription is not a function
    50
    80

Answer: A


NEW QUESTION # 42
Refer to the code below:
01 const server = require('server');
02 /* Insert code here */
A developer imports a library that creates a web server. The imported library uses events and
callbacks to start the servers
Which code should be inserted at the line 03 to set up an event and start the web server ?

  • A. server.on(' connect ' , ( port) => {
    console.log('Listening on ' , port) ;})
  • B. console.log( 'Listening on ', port) ;
  • C. server()
  • D. serve(( port) => (
  • E. Server.start ();

Answer: A


NEW QUESTION # 43
Refer to the code below:
Let car1 = new Promise((_ , reject) =>
setTimeout(reject, 2000, "car 1 crashed in" =>
Let car2 =new Promise(resolve => setTimeout(resolve, 1500, "car 2 completed")
Let car3 =new Promise(resolve => setTimeout(resolve, 3000, "car 3 completed")
Promise.race(( car1, car2, car3))
.then (value => (
Let result = '$(value) the race.';)}
.catch(arr => {
console.log("Race is cancelled.", err);
});
What is the value of result when Promise.race executes?

  • A. Car 3 completes the race
  • B. Car 2 completed the race.
  • C. Race is cancelled.
  • D. Car 1 crashed in the race.

Answer: B


NEW QUESTION # 44
Which statement accurately describes the behaviour of the async/ await keyworks ?

  • A. The associated function will always return a promise
  • B. The associated class contains some asynchronous functions.
  • C. The associated sometimes returns a promise.
  • D. The associated function can only be called via asynchronous methods

Answer: C


NEW QUESTION # 45
Refer the following code

what is the value of array after code executes?

Answer:

Explanation:
[ 1, 2, 3, 5 ]


NEW QUESTION # 46
......

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