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Prepare JavaScript-Developer-I Question Answers Free Update With 100% Exam Passing Guarantee [2023]
The Salesforce Certified JavaScript Developer I exam is a multiple-choice exam that consists of 60 questions. The time allotted for this exam is 105 minutes, and a passing score of 68% is required. The exam fee is $200, and it can be taken online or at a testing center.
By earning the Salesforce Certified JavaScript Developer I certification, individuals can demonstrate their expertise in developing custom applications on the Salesforce platform using JavaScript. This certification can enhance a developer’s career opportunities and make them a more valuable asset to their organization. Additionally, Salesforce Certified JavaScript Developer I certification holders are recognized by the industry as experts in the field and are listed on Salesforce’s official website as certified professionals.
The Salesforce Certified JavaScript Developer I credential is highly valued by employers and is recognized as a mark of excellence in the industry. This certification demonstrates that an individual has the skills and knowledge required to build custom applications on the Salesforce platform using JavaScript. It is an excellent way for developers to differentiate themselves in a competitive job market and advance their careers.
NEW QUESTION # 122
Refer to the string below.
Const str='Salesforce';
Which two statements results in the word 'Sales'?
Answer:
Explanation:
See the Answer below in explanation:
Explanation
Str.substring(0,5);
Str.substr(0,5);
NEW QUESTION # 123
Given the following code:
What is the output of line 02?
- A. 'object"
- B. "undefined" 0
- C. "null"
- D. "x-
Answer: A
NEW QUESTION # 124
Given the code below:
What is the expected output?
- A. Both lines 06 and 09 are executed, but the values outputted are undefined.
- B. Line 08 outputs the variable, but line 09 throws an error.
- C. Both lines 08 and 09 are executed, and the variables are outputted.
- D. Line 08 throws an error, therefore line 09 is never executed.
Answer: B
NEW QUESTION # 125
Refer to the following object.
How can a developer access the fullName property for dog?
- A. Dog.fullName
- B. Dog, function, fullName
- C. Dog, get, fullName
- D. Dog.fullName ( )
Answer: A
NEW QUESTION # 126
Refer to the string below.
Const str='Salesforce';
Which two statements results in the word 'Sales'?
Answer:
Explanation:
Str.substring(0,5);
Str.substr(0,5);
NEW QUESTION # 127
Which code change should be done for the console to log the following when 'Click me!' is clicked'
> Row log
> Table log
- A. Change line 10 to event.stopPropagation (false) ;
- B. Change line 14 to elem.addEventListener ('click', printMessage, true);
- C. Remove line 10
- D. Remove lines 13 and 14
Answer: A
NEW QUESTION # 128
A developer writes the code below to calculate the factorial of a given number function sum(number){ return number * sum(number-1);
}
sum(3);
what is the result of executing the code.
- A. -Infinity
- B. Error
- C. 0
- D. 1
Answer: B
NEW QUESTION # 129
Which statement accurately describes the behavior of the async /swait keywords?
- A. The associated function will always return a promise.
- B. The associated function sometimes returns a promise.
- C. The associated function can only be called via asynchronous methods.
- D. The associated class contains some asynchronous functions.
Answer: A
NEW QUESTION # 130
At Universal Containers, every team has its own way of copying JavaScript objects. The code Snippet shows an implementation from one team:
Function Person() {
this.firstName = "John";
this.lastName = 'Doe';
This.name =() => (
console.log('Hello $(this.firstName) $(this.firstName)');
)}
Const john = new Person ();
Const dan = JSON.parse(JSON.stringify(john));
dan.firstName ='Dan';
dan.name();
What is the Output of the code execution?
- A. Hello Dan Doe
- B. Hello John DOe
- C. TypeError: Assignment to constant variable.
- D. TypeError: dan.name is not a function
Answer: D
NEW QUESTION # 131
developer creates a new web server that uses Node.js. It imports a server library that uses events and callbacks for handling server functionality.
The server library is imported with require and is made available to the code by a variable named server. The developer wants to log any issues that the server has while booting up.
Given the code and the information the developer has, which code logs an error at boost with an event?
- A. Server.catch ((server) => {
console.log('ERROR', error);
}); - B. Server.error ((server) => {
console.log('ERROR', error);
}); - C. Server.on ('error', (error) => {
console.log('ERROR', error);
}); - D. Try{
server.start();
} catch(error) {
Answer: C
Explanation:
console.log('ERROR', error);
}
NEW QUESTION # 132
A developer tries to retrieve all cookies, then sets a certain key value pair in the cookie. These statements are used:
What is the behavior?
- A. Cookies are not read because line 01 should be document, cookies, but the key value is set and all cookies are wiped.
- B. Cookies are read and the key value is set, and all cookies are wiped.
- C. A Cookies are read and the key value is set, the remaining cookies are unaffected.
- D. Cookies are read, but the key value is not set because the value is not URL encoded.
Answer: C
NEW QUESTION # 133
Given the code below:
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.info(usersList) ;
- B. console.group(usersList) ;
- C. console.table(usersList) ;
- D. console.groupCol lapsed (usersList) ;
Answer: B
NEW QUESTION # 134
Refer to code below:
Const objBook = {
Title: 'Javascript',
};
Object.preventExtensions(objBook);
Const newObjBook = objBook;
newObjectBook.author = 'Robert';
What are the values of objBook and newObjBook respectively ?
- A. {author: "Robert", title: "javaScript}
{author: "Robert", title: "javaScript} - B. [title: "javaScript"] [title: "javaScript"]
- C. {author: "Robert"}
{author: "Robert", title: "javaScript} - D. {author: "Robert", title: "javaScript}
Undefined
Answer: B
NEW QUESTION # 135
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 functions foo and bar ?
- A. import * from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar(); - B. import all from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar(); - C. import (foo, bar) from '/path/universalContainersLib.js';
foo();
bar(); - D. import * ad lib from '/path/universalContainersLib.js';
lib.foo();
lib.bar();
Answer: D
NEW QUESTION # 136
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 regardless of which option is used.
- B. 1000 growl methods are created for Option A. 1 growl method is created for Option B.
- C. 1 growl method is created for Option A. 1000 growl methods are created for Option B.
- D. 1 growl method is created regardless of which option is used.
Answer: B
NEW QUESTION # 137
A Developer wrote the following code to test a sum3 function that takes in an array of numbers and returns the sum of the first three number in the array, The test passes:
Let res = sum2([1, 2, 3 ]) ;
console.assert(res === 6 );
Res = sum3([ 1, 2, 3, 4]);
console.assert(res=== 6);
A different developer made changes to the behavior of sum3 to instead sum all of the numbers present in the array. The test passes:
Which two results occur when running the test on the updated sum3 function ?
Choose 2 answers
- A. The line 02 assertion passes.
- B. The line 02 assertion fails
- C. The line 05 assertion fails.
- D. The line 05 assertion passes.
Answer: A,C
NEW QUESTION # 138
A developer receives a comment from the Tech Lead that the code given below has error:
const monthName = 'July';
const year = 2019;
if(year === 2019) {
monthName = 'June';
}
Which line edit should be made to make this code run?
- A. 03 if (year == 2019) {
- B. 02 let year =2019;
- C. 01 let monthName ='July';
- D. 02 const year = 2020;
Answer: C
NEW QUESTION # 139
Which two console logs out NaN?
Choose 2 answers
- A. Console.log(10 / 'five' ') ;
- B. Console.log (10 / 0);
- C. Console.log(10 / Number ('5) );
- D. Console.log(parseint ('two') ) ;
Answer: A,D
NEW QUESTION # 140
Refer to the following code block:
What is the console output?
- A. > Better student Jackie got 70% on test.
- B. > Better student Jackie got 100% on test.
- C. > Jackie got 70% on test.
- D. > Uncaught Reference Error
Answer: A
NEW QUESTION # 141
Refer to the code below:
What is the value of result when the code executes?
- A. 5-10
- B. 10-10
- C. 10-5
- D. 5-5
Answer: B
NEW QUESTION # 142
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 > 0
- B. > 5 > -1
- C. > 5 >undefined
- D. > true > false
Answer: C
NEW QUESTION # 143
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