AUTHORITATIVE JAVASCRIPT-DEVELOPER-I EXAM TOPIC BRING YOU PRACTICAL EXAM JAVASCRIPT-DEVELOPER-I DURATION FOR SALESFORCE SALESFORCE CERTIFIED JAVASCRIPT DEVELOPER I EXAM

Authoritative JavaScript-Developer-I Exam Topic bring you Practical Exam JavaScript-Developer-I Duration for Salesforce Salesforce Certified JavaScript Developer I Exam

Authoritative JavaScript-Developer-I Exam Topic bring you Practical Exam JavaScript-Developer-I Duration for Salesforce Salesforce Certified JavaScript Developer I Exam

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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q184-Q189):

NEW QUESTION # 184
A developer creates a simple webpage with an input field. When a user enters text in the input field and clicks the button, the actual value of the field must be displayed in the console.
Here is the HTML file content:
<input type =" text" value="Hello" name ="input">
<button type ="button" >Display </button> The developer wrote the javascript code below:
Const button = document.querySelector('button');
button.addEvenListener('click', () => (
Const input = document.querySelector('input');
console.log(input.getAttribute('value'));
When the user clicks the button, the output is always "Hello".
What needs to be done to make this code work as expected?

  • A. Replace line 04 with console.log(input .value);
  • B. Replace line 02 with button.addEventListener("onclick", function() {
  • C. Replace line 03 with const input = document.getElementByName('input');
  • D. Replace line 02 with button.addCallback("click", function() {

Answer: A


NEW QUESTION # 185
Refer to the following code block:
class Animal{
constructor(name){
this.name = name;
}
makeSound(){
console.log(`${this.name} is making a sound.`)
}
}
class Dog extends Animal{
constructor(name){
super(name)
this.name = name;
}
makeSound(){
console.log(`${this.name} is barking.`)
}
}
let myDog = new Dog('Puppy');
myDog.makeSound();
What is the console output?

Answer:

Explanation:
Puppy is barking


NEW QUESTION # 186
Refer to the code below:
Const myFunction = arr => {
Return arr.reduce((result, current) =>{
Return result = current;
}, 10};
}
What is the output of this function when called with an empty array ?

  • A. Returns NaN
  • B. Throws an error
  • C. Returns 0
  • D. Returns 10

Answer: D


NEW QUESTION # 187
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 2 completed the race.
  • B. Car 3 completes the race
  • C. Car 1 crashed in the race.
  • D. Race is cancelled.

Answer: A


NEW QUESTION # 188
Refer to the following code that imports a module named utils:
import (foo, bar) from '/path/Utils.js';
foo() ;
bar() ;
Which two implementations of Utils.js export foo and bar such that the code above runs without
error?
Choose 2 answers

  • A. Export default class {
    foo() { return 'foo' ; }
    bar() { return 'bar' ; }
    }
  • B. const foo = () => { return 'foo';}
    const bar = () => {return 'bar'; }
    Export default foo, bar;
  • C. const foo = () => { return 'foo' ; }
    const bar = () => { return 'bar' ; }
    export { bar, foo }
  • D. // FooUtils.js and BarUtils.js exist
    Import (foo) from '/path/FooUtils.js';
    Import (boo) from ' /path/NarUtils.js';

Answer: A,C


NEW QUESTION # 189
......

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