[Feb 17, 2023] New Real JavaScript-Developer-I Exam Dumps Questions [Q80-Q104]

Q80. A developer wants to create an object from a function in the browser using the code below.
What happens due to lack of the new keyword on line 02?

Q81. Refer to the code below:

A developer needs to dispatch a custom event called update to send information about recordId.
Which two options could a developer insert at the placeholder in line 02 to achieve this? Choose 2 answers

Q82. Which code statement below correctly persists an objects in local Storage ?

Q83. Refer to the code below:
const event = new CustomEvent(
//Missing Code
);
obj.dispatchEvent(event);
A developer needs to dispatch a custom event called update to send information about recordId.
Which two options could a developer insert at the placeholder in line 02 to achieve this?
Choose 2 answers

Q84. Refer to the following code:

Which two statements could be inserted at line 17 to enable the function call on line 18?
Choose 2 answers

Q85. Refer to the code below:

What is the value result after line 10 executes?

Q86. A developer has an ErrorMandler module that contains multiple functions.
What kind of export should be leveraged so that multiple function can be used?

Q87. Refer to the code below:
Function changeValue(obj) {
Obj.value = obj.value/2;
}
Const objA = (value: 10);
Const objB = objA;
changeValue(objB);
Const result = objA.value;
What is the value of result after the code executes?

Q88. Which code statement correctly retrieves and return an object from localStorage?
A)

B)

C)

D)

Q89. Refer to the code below:

Line 05 causes an error.
What are the values of greeting and salutation once code completes?

Q90. Refer to the code below:
01 const exec = (item, delay) =>{
02 new Promise(resolve => setTimeout( () => resolve(item), delay)),
03 async function runParallel() {
04 Const (result1, result2, result3) = await Promise.all{
05 [exec (‘x’, ‘100’) , exec(‘y’, 500), exec(‘z’, ‘100’)]
06 );
07 return `parallel is done: $(result1) $(result2)$(result3)`;
08 }
}
}
Which two statements correctly execute the runParallel () function?
Choose 2 answers

Q91. 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?

Q92. A developer at Universal Containers is creating their new landing page based on HTML, CSS, and JavaScript.
To ensure that visitors have a good experience, a script named personalizeWebsiteContent needs to be executed when the webpage is fully loaded (HTML content and all related files), in order to do some custom initializations.
Which implementation should be used to call Fe:s:-a;::eHec5;te::.-.ter.: based on the business requirement above?

Q93. Given the HTML below:

Which statement adds the priority-account CSS class to the Unversal Containers row?

Q94. Refer to the following code that performs a basic mathematical operation on a provided input:
function calculate(num) {
Return (num +10) / 3;
}
How should line 02 be written to ensure that x evaluates to 6 in the line below?
Let x = calculate (8);

Q95. 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?

Q96. Why would a developer specify a package as the package.json as a deDepdelivery instead of a depdelivery?

Q97. Refer to following code block:
Let array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,];
Let output =0;
For (let num of array){
if (output >0){
Break;
}
if(num % 2 == 0){
Continue;
}
Output +=num;
What is the value of output after the code executes?

Q98. A developer creates a class that represents a blog post based on the requirement that a Post should have a body author and view count.
The Code shown Below:
Class Post {
// Insert code here
This.body =body
This.author = author;
this.viewCount = viewCount;
}
}
Which statement should be inserted in the placeholder on line 02 to allow for a variable to be set to a new instanceof a Post with the three attributes correctly populated?

Q99. Refer to the following array:
Let arr1 = [1, 2, 3, 4, 5];
Which two lines of codes result in a second array, arr2, being created such that arr2 is not a reference to arr1? Choose 2 answers

Q100. A test has a dependency on database. query. During the test, the dependency is replaced with an object called database with the method,
Calculator query, that returns an array. The developer does not need to verify how many times the method has been called.
Which two test approaches describe the requirement?
Choose 2 answers

Q101. Which three browser specific APIs are available for developers to persist data between page loads ?
Choose 3 answers

Q102. 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?

Q103. A developer is asked to fix some bugs reported by users. To do that, the developer adds
a breakpoint for debugging.
Function Car (maxSpeed, color){
This.maxspeed =masSpeed;
This.color = color;
Let carSpeed = document.getElementById(‘ CarSpeed’);
Debugger;
Let fourWheels =new Car (carSpeed.value, ‘red’);
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:

Q104. Refer to the code:

Given the code above, which three properties are set pet1?
Choose 3 answers: