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Salesforce JavaScript-Developer-I is a certification exam designed for professionals who want to demonstrate their expertise in using JavaScript and related technologies to develop custom applications on the Salesforce platform. JavaScript-Developer-I exam measures the candidate's knowledge of the fundamental concepts of JavaScript, including data types, control structures, functions, arrays, and objects, as well as their ability to apply this knowledge to solve real-world programming problems.

Salesforce Certified JavaScript Developer I Exam Sample Questions (Q109-Q114):

NEW QUESTION # 109
Given the code below:
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 function Console 16 Bit (name) {
09 GameConsole.call(this, name) ;
10 }
11 Console16bit.prototype = Object.create ( GameConsole.prototype) ;
12 //insert code here
13 console.log( ` $(this.name) is loading a cartridge game : $(gamename) ...`);
14 }
15 const console16bit = new Console16bit(' SNEGeneziz ');
16 console16bit.load(' Super Nonic 3x Force ');
What should a developer insert at line 15 to output the following message using the method ?
> SNEGeneziz is loading a cartridge game: Super Monic 3x Force . . .

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) {

Answer: A

NEW QUESTION # 110
Refer to the code snippet:

What is the value of array after the code executes?

A. 1, 2, 3, 5
B. 1, 2, 3, 4, 5, 4, 4
C. 1, 2, 3, 4, 4, 5, 4
D. 1, 2, 3, 4, 5, 4

Answer: A

NEW QUESTION # 111
Given the following code:
Let x =null;
console.log(typeof x);
What is the output of the line 02?

A. "X"
B. "undefined"
C. "Null"
D. "Object"

Answer: D

NEW QUESTION # 112
Refer to the code below:

What is the output of this function when called with an empty array?

A. Return Infinity
B. Return 0
C. Return NaN
D. Return 5

Answer: D

NEW QUESTION # 113
Which function should a developer use to repeatedly execute code at a fixed interval ?

A. setPeriod
B. setTimeout
C. setInteria
D. setIntervel

Answer: D

NEW QUESTION # 114
......

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