[Jan-2022] Dumps Practice Exam Questions Study Guide for the JavaScript-Developer-I Exam
JavaScript-Developer-I Dumps with Practice Exam Questions Answers
Salesforce JavaScript-Developer-I Exam Syllabus Topics:
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Topics of Salesforce JavaScript Developer I Exam
Aspirants must know the exam topics before they start of preparation. Because it will help them to prepare for the below concepts Salesforce JavaScript-Developer-I exam will include the following topics:
1. Variable, Types, and Collection: 23%
Scenario based coding Variables Creation and Initialization JSON object understanding
2. Object, Functions, and Classes: 25%
Implementation of different functions Understanding of different modules of Javascript Scope of variables and their execution flow
3. Browser and Events: 17%
Handling and propagation of events Development tools of browsers Understanding of browser specific APIs
4. Asynchronous Programming: 13%
Asynchrounous programming different concepts Monitoring and management of different loops
5. Server Side Javascript: 8%
Implementation of Node.js Understanding of Node.js CLI commands
6. Testing: 7%
Unit Testing effectiveness of different tests
NEW QUESTION 52
Refer to the code below:
new Promise((resolve, reject) => {
const fraction = Math.random();
if( fraction >0.5) reject("fraction > 0.5, " + fraction);
resolve(fraction);
})
.then(() =>console.log("resolved"))
.catch((error) => console.error(error))
.finally(() => console.log(" when am I called?"));
When does Promise.finally on line 08 get called?
- A. WHen resolved
- B. When rejected
- C. When resolved or rejected
- D. When resolved and settled
Answer: C
NEW QUESTION 53
Universal Containers recently its new landing page to host crowd-function campaign. The page uses an external library to display some third-party ads. Once the page is fully loaded, It creates more than 50 new HTML items placed randomly inside the DOM, like the one in the code below.
All the elements included the same ad-library-item class. They are hidden by default, and they are randomly displayed while the user navigation through the page.
Tired of all the ads, what can the developer do to temporarily and quickly remove them?
- A. Use the DOM inspector to remove all the elements containing the call ad-library -item.
- B. Use the browser console to execute a script that prevents the load event to be fired.
- C. Use the browser console to execute a script that removes all the elements containing the class ad-library-item.
- D. Use the DOM inspector to prevent the load event to be fired.
Answer: C
NEW QUESTION 54
A developer has two ways to write a function:
After deciding on an option, the developer creates 1000 monster objects.
How many growl methods are created with Option A and Option B?
- A. 1000 growl methods are created for Option A. 1 growl method is created for Option B.
- B. 1000 growl methods are created regardless of which option is used.
- C. 1 growl method is created regardless of which option is used.
- D. 1 growl method is created for Option A. 1000 growl methods are created for Option B.
Answer: A
NEW QUESTION 55
Refer to the code below:
Line 05 causes an error.
What are the values of greeting and salutation once code completes?
- A. Greeting is Goodbye and salutation is I say Hello.
- B. Greeting is Hello and salutation is Hello, Hello.
- C. Greeting is Goodbye and salutation is Hello, Hello.
- D. Greeting is Hello and salutation is I say hello.
Answer: B
NEW QUESTION 56
Refer to the code:
Given the code above, which three properties are set pet1?
Choose 3 answers:
- A. canTalk
- B. Type
- C. Name
- D. Size
- E. Owner
Answer: A,B,D
NEW QUESTION 57
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. Browser javaScript console
- B. Terminal running the web server.
- C. Browser performance tools
- D. On the webpage
Answer: A
NEW QUESTION 58
Which three browser specific APIs are available for developer to persist data between page loads?
Choose 3 answers
- A. localStorage
- B. indexedDB
- C. global variables
- D. cookies
- E. IIFEs
Answer: A,B,E
NEW QUESTION 59
Refer to the code below:
Which assertion accurately tests the above code?
- A. Console, assert ( await functionalUnderTest (true) , 'ok
- B. Console, assert ( await functionalUnderTest (true) , 'not ok' )
- C. Console, assert (functionalUnderTest (true) , 'ok')
- D. Console, assert ( await functionalUnderTest (true) , 'not ok) )
Answer: C
NEW QUESTION 60
Refer to the following code:
Let sampletext = 'The quick brown fox Jumps';
A developer need to determine if a certain substring is part of a string.
Which three expressions return true for the give substring? Choose 3 answers
- A. sampleText.includes (quick', 4);
- B. sampleText.includes (fox' , 3);
- C. sampleText.indexof ('quick') 1== -1;
- D. sampleText.inclides (fox');
- E. sampleText.substing ('fox');
Answer: B
NEW QUESTION 61
A developer is asked to fix some bugs reported by users. To do that, the developer adds a breakpoint for debugging.
When the code execution stops at the breakpoint on line 06, which two types of information are available In the browser console? Choose 2 answers
- A. A variable's displaying the number of instances created for the Car object.
- B. The style, event listeners and other attributes applied to the carSpeed DOM element.
- C. The information stored in the window.localStorage property.
- D. The value of the carSpeed and fourWheel variables
Answer: B,C
NEW QUESTION 62
Which three actions can be done using the JavaSript browser console?
Choose 3 answer
- A. Run code a that is not related to the page.
- B. View, change, and debug the JavaScript code of the page.
- C. View and change security cookies
- D. Display a report showing the performance of a page.
- E. View and change the DOM of the page.
Answer: A,B,E
NEW QUESTION 63
Refer to the code below:
Which two function can replace line 01 and return 58 to sum? Choose 2 answers
- A. const addBy = (num1) num1 + num2
- B. Const addby = function (num1) (
Return function (num2) (
}
} - C. const addBy = num1 (num2) => num1 + num2 ;
- D. const addBy = function (num1) {
Return function (num2) {
}
}
Answer: C,D
NEW QUESTION 64
Refer to the code below:
What is the value of result when the code executes?
- A. 5 - 5
- B. 10 - 5
- C. 5 - 10
- D. 10 - 10
Answer: D
NEW QUESTION 65
Refer to the code below:
What is the value of result after the code executes?
- A. 0
- B. NaN
- C. 1
- D. undefined
Answer: A
NEW QUESTION 66
Refer to the code below:
Const searchTest = 'Yay! Salesforce is amazing!" ;
Let result1 = searchText.search(/sales/i);
Let result 21 = searchText.search(/sales/i);
console.log(result1);
console.log(result2);
After running this code, which result is displayed on the console?
- A. > 5 >undefined
- B. > 5 > -1
- C. > 5 > 0
- D. > true > false
Answer: A
NEW QUESTION 67
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Salesforce JavaScript Developer I Certification Path
You must get an idea of exactly what this certification is, before investing your valuable time, effort, or money in Salesforce. The demand and the need for Salesforce certified professionals are rapidly growing and so Salesforce JavaScript Developer I Certification is becoming more and more popular. Different types of online training sessions are provided such as Intellipaat ’s online training sessions for the Salesforce JavaScript Developer I Qualification . It is instructor-led teaching by subject professionals working in major organizations. This style of training includes live sessions with the teacher, along with a forum where you can clear all your course-based doubts.
Self-paced sessions are also offered. This training mode involves pre-recorded video sessions. You can conveniently return to these talks and revisit the subjects you have skipped whether you have any difficulties with the lectures or have difficulty keeping up with the online meetings. You will also use these sessions to finish your exercise at your speed while you access these online lessons throughout your life.
Free Salesforce Developer JavaScript-Developer-I Exam Question: https://www.braindumpspass.com/Salesforce/JavaScript-Developer-I-practice-exam-dumps.html
JavaScript-Developer-I by Salesforce Developer Actual Free Exam Practice Test: https://drive.google.com/open?id=1a08jwtKo-Z3QUs1IPXsVyOI_Xt_Tcaww
