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To prepare for the CRT-600 exam, candidates should have a thorough understanding of JavaScript programming concepts, as well as experience with Salesforce development tools and technologies. There are various study materials available for the exam, including online courses, study guides, and practice exams. Candidates can also take advantage of Salesforce's Trailhead learning platform to gain hands-on experience with Salesforce development. By passing the CRT-600 exam, individuals will gain a valuable certification that can lead to new job opportunities and career advancement in the Salesforce ecosystem.
Salesforce CRT-600 (Salesforce Certified JavaScript Developer I) Certification Exam is designed for developers who want to demonstrate their expertise in building custom applications on the Salesforce platform using JavaScript. CRT-600 exam is a great way for developers to validate their skills and knowledge of Salesforce development and gain recognition as a certified professional.
If you're looking to certify your Salesforce development skills and wish to specialize in JavaScript, then the Salesforce CRT-600 exam is the perfect choice. Salesforce Certified JavaScript Developer I certification is ideal for developers who want to expand their skillset and work on advanced Lightning Web Components projects, APIs, and mobile applications. Salesforce developers with CRT-600 certification are capable of designing and developing complex custom UIs on the Salesforce platform, creating custom Lightning components, integrating with third-party APIs, and more. Obtaining the Salesforce Certified JavaScript Developer I credential opens doors to new job opportunities and is valuable career-wise as it strengthens your developer’s credentials and boosts your career growth.
NEW QUESTION # 15
developer wants to use a module named universalContainersLib and them call functions from it.
How should a developer import every function from the module and then call the fuctions foo and bar ?
- A. import * ad lib from '/path/universalContainersLib.js';
lib.foo();
lib.bar(); - B. import (foo, bar) from '/path/universalContainersLib.js';
foo();
bar(); - C. import * from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar(); - D. import all from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar();
Answer: A
NEW QUESTION # 16
Refer to the code:
Given the code above, which three properties are set for pet1? Choose 3 answers
- A. type
- B. size
- C. canTalk
- D. owner
- E. name
Answer: A,B,C
NEW QUESTION # 17
Refer to the code below:
Considering that JavaScript is single-threaded, what is the output of line 08 after the code executes?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 18
A developer wrote the following code:
01 let X = object.value;
02
03 try {
04 handleObjectValue(X);
05 } catch (error) {
06 handleError(error);
07 }
The developer has a getNextValue function to execute after handleObjectValue(), but does not want to execute getNextValue() if an error occurs.
How can the developer change the code to ensure this behavior?
- A. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } finally {
08 getNextValue();
10 } - B. 03 try {
04 handleObjectValue(x)
05 ........................ - C. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } then {
08 getNextValue();
09 } - D. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 }
08 getNextValue();
Answer: B
NEW QUESTION # 19
Refer to the following code:
- A. document.querySelector('$main li.Tony').innerHTML = '" The Lion ';
- B. document.querySelectorAll('$main $TONY').innerHTML = '" The Lion
- C. document.querySelector('$main li:nth-child(2)'),innerHTML = " The Lion. ';
- D. document.querySelector('$main li:second-child').innerHTML = " The Lion ';
Answer: B
NEW QUESTION # 20
Which javascript methods can be used to serialize an object into a string and deserialize a JSON string into an object, respectively?
- A. JSON.stringify and JSON.parse
- B. JSON.parse and JSON.deserialize
- C. JSON.serialize and JSON.deserialize
- D. JSON.encode and JSON.decode
Answer: A
NEW QUESTION # 21
Refer to the code below:
const car = {
price:100,
getPrice:function(){
return this.price;
}
};
const customCar = Object.create(car);
customCar.price = 70;
delete customCar.price;const result = customCar.getPrice();
What is the value of result after the code executes?
- A. null
- B. undefined
- C. 0
- D. 1
Answer: D
NEW QUESTION # 22
Refer to the following code:
01 function Tiger(){
02 this.Type = 'Cat';
03 this.size = 'large';
04 }
05
06 let tony = new Tiger();
07 tony.roar = () =>{
08 console.log('They\'re great1');
09 };
10
11 function Lion(){
12 this.type = 'Cat';
13 this.size = 'large';
14 }
15
16 let leo = new Lion();
17 //Insert code here
18 leo.roar();
Which two statements could be inserted at line 17 to enable the function call on line 18?
Choose 2 answers.
- A. Object.assign(leo,Tiger);
- B. Leo.roar = () => { console.log('They\'re pretty good:'); };
- C. Object.assign(leo,tony);
- D. Leo.prototype.roar = () => { console.log('They\'re pretty good:'); };
Answer: B,C
NEW QUESTION # 23
Given the expressions var1 and var2, what are two valid ways to return the concatenation of the two expressions and ensure it is string? Choose 2 answers
- A. String (var1) .concat (var2)
- B. var1 + var2
- C. string.concat (var1 +var2)
- D. var1.toString ( ) var2.toString ( )
Answer: C,D
NEW QUESTION # 24
A developer at Universal Containers creates a new landing page based on HTML, CSS, and JavaScript TO ensure that visitors have a good experience, a script named personaliseContext needs to be executed when the webpage is fully loaded (HTML content and all related files ), in order to do some custom initialization.
Which statement should be used to call personalizeWebsiteContent based on the above business requirement?
- A. window.addEventListener('load',personalizeWebsiteContext);
- B. window.addEventListener('onload', personalizeWebsiteContext);
- C. document.addEventListener(''onDOMContextLoaded', personalizeWebsiteContext);
- D. Document.addEventListener('''DOMContextLoaded' , personalizeWebsiteContext);
Answer: A
NEW QUESTION # 25
is below:
<input type="file" onchange="previewFile()">
<img src="" height="200" alt="Image Preview..."/>
The JavaScript portion is:
01 function previewFile(){
02 const preview = document.querySelector('img');
03 const file = document.querySelector('input[type=file]').files[0];
04 //line 4 code
05 reader.addEventListener("load", () => {
06 preview.src = reader.result;
07 },false);
08 //line 8 code
09 }
In lines 04 and 08, which code allows the user to select an image from their local computer , and to display the image in the browser?
- A. 04 const reader = new File();
08 if (file) URL.createObjectURL(file); - B. 04 const reader = new FileReader();
08 if (file) URL.createObjectURL(file); - C. 04 const reader = new FileReader();
08 if (file) reader.readAsDataURL(file); - D. 04 const reader = new File();
08 if (file) reader.readAsDataURL(file);
Answer: C
NEW QUESTION # 26
Refer to code below:
Let a ='a';
Let b;
// b = a;
console.log(b);
What is displayed when the code executes?
- A. A
- B. ReferenceError: b is not defined
- C. Null
- D. Undefined
Answer: D
NEW QUESTION # 27
Refer to the code below:
Const resolveAfterMilliseconds = (ms) => Promise.resolve (
setTimeout (( => console.log(ms), ms ));
Const aPromise = await resolveAfterMilliseconds(500);
Const bPromise = await resolveAfterMilliseconds(500);
Await aPromise, wait bPromise;
What is the result of running line 05?
- A. aPromise and bPromise run sequentially.
- B. aPromise and bPromise run in parallel.
- C. Neither aPromise or bPromise runs.
- D. Only aPromise runs.
Answer: C
NEW QUESTION # 28
Given the HTML below:
Which statement adds the priority-account CSS class to the Universal Containers row?
- A. document. getElementByid('row-uc').addClass('priority-account*);
- B. document. querySelectorAll('#row-uc') -classList.add("priority-accour');
- C. document. queryselector('#row-uc').ClassList.add('priority-account');
- D. document. querySelector (#row-uc'). classes-push('priority-account');
Answer: C
NEW QUESTION # 29
A developer is debugging a web server that uses Node.js The server hits a runtimeerror every third request to an important endpoint on the web server.
The developer added a break point to the start script, that is at index.js at he root of the server's source code. The developer wants to make use of chrome DevTools to debug.
Which command can be run to access DevTools and make sure the breakdown is hit ?
- A. Node inspect index.js
- B. Node --inspect-brk index.js
- C. Node --inspect index.js
- D. node -i index.js
Answer: C
NEW QUESTION # 30
Which two code snippets show working examples of a recursive function?
Choose 2 answers
- A. Const sumToTen = numVar => {
If (numVar < 0)
Return;
return sumToTen(numVar + 1)}; - B. Let countingDown = function(startNumber) {
If ( startNumber >0) {
console.log(startNumber) ;
return countingDown(startNUmber);
} else {
return startNumber;
}}; - C. Function factorial ( numVar ) {
If (numVar < 0) return;
If ( numVar === 0 ) return 1;
return numVar -1; - D. Const factorial =numVar => {
If (numVar < 0) return;
If ( numVar === 0 ) return 1;
return numVar * factorial ( numVar - 1 );
};
Answer: B,D
NEW QUESTION # 31
Universal Containers (UC) just launched a new landing page, but users complain that the website is slow. A developer found some functions any that might cause this problem. To verify this, the developer decides to execute everything and log the time each of these three suspicious functions consumes.
Which function can the developer use to obtain the time spent by every one of the three functions?
- A. console. timeLog ()
- B. console.getTime ()
- C. console.timeStamp ()
- D. console.trace()
Answer: A
NEW QUESTION # 32
Which three statements are true about promises ?
Choose 3 answers
- A. A settled promise can become resolved.
- B. The executor of a new Promise runs automatically.
- C. A fulfilled or rejected promise will not change states .
- D. A pending promise can become fulfilled, settled, or rejected.
- E. A Promise has a .then() method.
Answer: C,D,E
NEW QUESTION # 33
A developer has the function, shown below, that is called when a page loads.
Where can the developer see the log statement after loading the page in the browser?
- A. On the browser JavaScript console
- B. On the webpage console log
- C. On the terminal console running the web server
- D. In the browser performance tools log
Answer: A
NEW QUESTION # 34
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 defined
- B. Developer
- C. ReferenceError: assignment to undeclared variable "Person"
- D. Undefined
Answer: D
NEW QUESTION # 35
The developer wants to test the array shown:
const arr = Array(5).fill(0)
Which two tests are the most accurate for this array ?
Choose 2 answers:
- A. console.assert(arr[0] === 0 && arr[ arr.length] === 0);
- B. arr.forEach(elem => console.assert(elem === 0)) ;
- C. console.assert( arr.length === 5 );
- D. console.assert (arr.length >0);
Answer: B,C
NEW QUESTION # 36
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