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Salesforce is a customer relationship management (CRM) platform that has become an essential tool for businesses to manage their sales, marketing, and customer service operations. As Salesforce continues to gain popularity, the demand for skilled Salesforce developers has increased. Salesforce offers several certifications, including the Salesforce Certified JavaScript Developer I certification, which is designed for developers who want to demonstrate their expertise in building custom applications using Salesforce’s JavaScript framework.
In order to take the Salesforce JavaScript-Developer-I Certification Exam, candidates must have a solid understanding of basic JavaScript concepts such as data types, control structures, and functions. They should also be familiar with the Salesforce platform, including Apex, Visualforce, and the Lightning Component Framework. Additionally, candidates should have experience with web development technologies such as HTML, CSS, and JavaScript frameworks like jQuery and AngularJS.
NEW QUESTION # 131
Refer to the code below:
Which value can a developer expect when referencing country,capital,cityString?
- A. undefined
- B. An error
- C. 'NaN'
- D. 'London'
Answer: C
NEW QUESTION # 132
Refer to the expression below:
Let x = ('1' + 2) == (6 + 2) ;
How should this expression be modified to ensure that a evaluated to false?
- A. Let x = (1' + '2') == (6 + 2) ;
- B. Let x = (1' + '2') === (6 + 2) ;
- C. Let x = (1' + '2') == ('6' / 2) ;
- D. Let x = (1' + '2') === (6 / 2) ;
Answer: B
NEW QUESTION # 133
A developer has code that calculates a restaurant bill, but generates incorrect answers
while testing the code:
function calculateBill ( items ) {
let total = 0;
total += findSubTotal(items);
total += addTax(total);
total += addTip(total);
return total;
}
Which option allows the developer to step into each function execution within calculateBill?
- A. Using the debugger command on line 03
- B. Using the debugger command on line 05.
- C. Calling the console.trace (total) method on line 03.
- D. Wrapping findSubtotal in a console.log() method.
Answer: B
NEW QUESTION # 134
A developer has an is Dog function that takes one argument cat. They want to schedule the function to run every minute.
What is the correct syntax for scheduling this function?
- A. setInterval(isDog, 60000,'cat');
Answer: A
NEW QUESTION # 135
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. The style, event listeners and other attributes applied to the carSpeed DOM element.
- B. The value of the carSpeed and fourWheel variables
- C. A variable's displaying the number of instances created for the Car object.
- D. The information stored in the window.localStorage property.
Answer: A,D
NEW QUESTION # 136
Refer to the code below:
Which assertion accurately tests the above code?
- A. Console, assert (functionalUnderTest (true) , 'ok')
- B. Console, assert ( await functionalUnderTest (true) , 'not ok) )
- C. Console, assert ( await functionalUnderTest (true) , 'ok
- D. Console, assert ( await functionalUnderTest (true) , 'not ok' )
Answer: A
NEW QUESTION # 137
A developer writes the code below to return a message to a user attempting to register a new username. If the username is available, a variable named nag is declared and assigned a value on line 03.
What is the value of msg when getAvailableabilityMessage ("newUserName") is executed and get Availability ("newUserName") returns true?
- A. undefined
- B. "User-name available"
- C. "newUserName"
- D. "msg is not defined"
Answer: B
NEW QUESTION # 138
Refer tothe code below:
What is the value of result after line 10 executes?
- A. John undefined
- B. John Developer
- C. Error: myFather.job is not a function
- D. undefined Developer
Answer: B
NEW QUESTION # 139
What is the result of the code block?
- A. The console logs only 'flag'.
- B. The console logs 'flag' and another flag.
- C. An error is thrown.
- D. The console logs 'flag' and then an error is thrown.
Answer: A
NEW QUESTION # 140
The developer has a function that prints "Hello" to an input name. To test this, thedeveloper created a function that returns "World". However the following snippet does not print " Hello World".
What can the developer do to change the code to print "Hello World" ?
- A. Change line 7 to ) () ;
- B. Change line 2 to console.log('Hello' , name() );
- C. Change line 9 to sayHello(world) ();
- D. Change line 5 to function world ( ) {
Answer: B
NEW QUESTION # 141
A developer is leading the creating of a new browser application that will server a single page application. The team wants to use a new web framework Minialist.js. The lead developer wants to advocate for a more seasoned wen framework that already has a community around it.
Which two frameworks should the load developer advocate for?
- A. Express
- B. Vue
- C. Koa
- D. Angular
Answer: A,D
NEW QUESTION # 142
A developer wrote a fizzbuzz function that when passed in a number, returns the
following:
● 'Fizz' if the number is divisible by 3.
● 'Buzz' if the number is divisible by 5.
● 'Fizzbuzz' if the number is divisible by both 3 and 5.
● Empty string if the number is divisible by neither 3 or 5.
Which two test cases will properly test scenarios for the fizzbuzz function?
Choose 2 answers
- A. let res = fizzbuzz(5);
console.assert ( res === ' ' ); - B. let res = fizzbuzz(Infinity);
console.assert ( res === ' ' ) - C. let res = fizzbuzz(15);
console.assert ( res === ' fizzbuzz ' ) - D. let res = fizzbuzz(3);
console.assert ( res === ' buzz ' )
Answer: B,C,D
NEW QUESTION # 143
Refer to the code below:
What are the values for first and second once the executes?
- A. First is who and second is when.
- B. First is who and second is where.
- C. First is why and second is where.
- D. First is why and second is when.
Answer: C
NEW QUESTION # 144
Refer to the code below:
let o = {
get js() {
let city1 = String("st. Louis");
let city2 = String(" New York");
return {
firstCity: city1.toLowerCase(),
secondCity: city2.toLowerCase(),
}
}
}
What value can a developer expect when referencing o.js.secondCity?
- A. ' new york '
- B. ' New York '
- C. An error
- D. Undefined
Answer: A
NEW QUESTION # 145
Given the JavaScript below:
01 function filterDOM (searchString) {
02 const parsedSearchString = searchString && searchString.toLowerCase() ;
03 document.quesrySelectorAll(' .account' ) . forEach(account => (
04 const accountName = account.innerHTML.toLOwerCase();
05 account. Style.display = accountName.includes(parsedSearchString) ? /*Insert
code*/;
06 )};
07 }
Which code should replace the placeholder comment on line 05 to hide accounts that do
not match the search string?
- A. ' Block ' : ' none '
- B. ' visible ' : ' hidden '
- C. ' hidden ' : ' visible '
- D. ' name ' : ' block '
Answer: A
NEW QUESTION # 146
Which statement parses successfully?
- A. JSON.parse ('' 'foo'' ');
- B. JSON.parse ('' 'foo' '');
- C. JSON.parse (''foo '');
- D. JSON.parse ('foo ');
Answer: C
NEW QUESTION # 147
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 > -1
- B. > 5 >undefined
- C. > 5 > 0
- D. > true > false
Answer: B
Explanation:
NEW QUESTION # 148
A developer is required to write a function that calculates the sum of elements in an array but is getting undefinedevery time the code is executed. The developer needs to find what is missing in the code below.
Const sumFunction = arr => {
Return arr.reduce((result, current) => {
//
Result += current;
//
), 10);
);
Which option makes the code work as expected?
- A. Replace line 05 with return result;
- B. Replace line02 with return arr.map(( result, current) => (
- C. Replace line 04 with result = result +current;
- D. Replace line 03 with if(arr.length == 0 ) ( return 0; )
Answer: A
NEW QUESTION # 149
Refer to the code below:
Let str = 'javascript';
Str[0] = 'J';
Str[4] = 'S';
After changing the string index values, the value of str is 'javascript'. What is the reason for this value:
- A. Non-primitive values are mutable.
- B. Primitive values are immutable.
- C. Non-primitive values are immutable.
- D. Primitive values are mutable.
Answer: B
NEW QUESTION # 150
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