Free Salesforce JS-Dev-101 Exam Dumps Questions & Answers

01 function changeValue(obj) {
02 obj.value = obj.value / 2;
03 }
04 const objA = {value: 10};
05 const objB = objA;
06
07 changeValue(objB);
08 const result = objA.value;
What is the value of result after the code executes?

• A.undefined
• B.10
• C.low
• D.5

Given the code:
01 function GameConsole(name) {
02 this.name = name;
03 }
04
05 GameConsole.prototype.load = function(gamename) {
06 console.log('${this.name} is loading a game: ${gamename}....');
07 }
08
09 function Console16bit(name) {
10 GameConsole.call(this, name);
11 }
12
13 Console16bit.prototype = Object.create(GameConsole.prototype);
14
15 // insert code here
16 console.log('${this.name} is loading a cartridge game: ${gamename}....');
17 }
18
19 const console16bit = new Console16bit('SNEGeneziz');
20 console16bit.load('Super Monic 3x Force');
What should a developer insert at line 15?

• A.Console16bit.prototype.load = function(gamename) {
• B.Console16bit.prototype.load(gamename) {
• C.Console16bit.prototype.load(gamename) = function() {
• D.Console16bit = Object.create(GameConsole.prototype).load = function(gamename) {

Given the code below:
01 function Person(name, email) {
02 this.name = name;
03 this.email = email;
04 }
05
06 const john = new Person('John', '[email protected]');
07 const jane = new Person('Jane', '[email protected]');
08 const emily = new Person('Emily', '[email protected]');
09
10 let usersList = [john, jane, emily];
Which method can be used to provide a visual representation of the list of users and to allow sorting by the name or email attribute?

• A.console.group(usersList);
• B.console.table(usersList);
• C.console.info(usersList);
• D.console.groupCollapsed(usersList);

Given two expressions, exp1 and exp2, which two valid ways return the logical AND of the two expressions and ensure it is a Boolean?

• A.Boolean(var1) && Boolean(var2)
• B.Boolean(exp1) && Boolean(exp2)
• C.Boolean(exp1 && exp2)
• D.exp1 & exp2

Refer to the following code:
01 class Ship {
02 constructor(size) {
03 this.size = size;
04 }
05 }
06
07 class FishingBoat extends Ship {
08 constructor(size, capacity){
09 //Missing code
10 this.capacity = capacity;
11 }
12 displayCapacity() {
13 console.log('The boat has a capacity of ${this.capacity} people.');
14 }
15 }
16
17 let myBoat = new FishingBoat('medium', 10);
18 myBoat.displayCapacity();
Which statement should be added to line 09 for the code to display
The boat has a capacity of 10 people?

• A.ship.size = size;
• B.super.size = size;
• C.super(size);
• D.this.size = size;