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Get Latest Nov-2023 Conduct effective penetration tests using TestBraindump JavaScript-Developer-I exam [Q54-Q77]

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Get Latest [Nov-2023] Conduct effective penetration tests using TestBraindump JavaScript-Developer-I

Penetration testers simulate JavaScript-Developer-I exam PDF

To prepare for the Salesforce JavaScript-Developer-I certification exam, candidates should have a solid understanding of JavaScript fundamentals, as well as experience working with Apex, Visualforce, and Lightning components. Salesforce offers a variety of resources to help candidates prepare for the exam, including self-study courses, instructor-led training, and practice exams.

 

NO.54 A class was written to represent items for purchase in an online store, and a second class representing items that are on sale at a discounted price. The constructor sets the name to the first value passed in. The pseudocode is below:

There is a new requirement for a developer to implement a description method that will retrun a brief description for item and saleitem.

What is the out when executing the code above?

 
 
 
 

NO.55 A developer uses a parsed JSON string to work with user information as in the block below:
01 const userInformation ={
02 ” id ” : “user-01”,
03 “email” : “[email protected]”,
04 “age” : 25
Which two options access the email attribute in the object?
Choose 2 answers

 
 
 
 

NO.56 Refer to the code below:
<html lang=”en”>
<table onclick=”console.log(Table log’);”>
<tr id=”row1″>
<td>Click me!</td>
</tr>
<table>
<script>
function printMessage(event) {
console.log(‘Row log’);
}
Let elem = document.getElementById(‘row1’);
elem.addEventListener(‘click’, printMessage, false);
</script>
</html>
Which code change should be made for the console to log only Row log when ‘Click me! ‘ is
clicked?

 
 
 
 

NO.57 Refer to the following array:
Let arr1 = [ 1, 2, 3, 4, 5 ];

Which two lines of code result in a second array, arr2 being created such that arr2 is not a reference to arr1?

 
 
 
 

NO.58 Refer to the following object.

How can a developer access the fullName property for dog?

 
 
 
 

NO.59 Refer to code below:
function Person() {
this.firstName = ‘John’;
}
Person.prototype ={
Job: x => ‘Developer’
};
const myFather = new Person();
const result =myFather.firstName + ‘ ‘ + myFather.job();
What is the value of the result after line 10 executes?

 
 
 
 

NO.60 Which three statements are true about promises ?
Choose 3 answers

 
 
 
 
 

NO.61 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?

 
 
 
 

NO.62 A developer needs to debug a Node.js web server because a runtime error keeps occurring at one of the endpoints.
The developer wants to test the endpoint on a local machine and make the request against a local server to look at the behavior. In the source code, the server, js file will start the server. the developer wants to debug the Node.js server only using the terminal.
Which command can the developer use to open the CLI debugger in their current terminal window?

 
 
 
 

NO.63 developer publishes a new version of a package with new features that do not break backward compatibility. The previous version number was 1.1.3.
Following semantic versioning format, what should the new package version number be?

 
 
 
 

NO.64 The developer has a function that prints ”Hello” to an input name. To test this, the developer created a function that returns world”.

What can the developer do to change the code to print ”Hello world”?

 
 
 
 

NO.65 Refer to the following code:
class Vehicle{
constructor(plate){
this.plate = plate;
}
}
class Truck extends Vehicle{
constructor(plate, weight){
//Missing code
this.weight = weight;
}
displayWeight(){
console.log(`The truck ${this.plate} has a weight of ${this.weight}lb.`);
}
}let myTruck = new Truck(‘123Ab’,5000);
myTruck.displayWeight();
Which statement should be added to missing code for the code to display ‘The truck 123AB has a weight of 5000lb.

 
 
 
 

NO.66 Refer to the code below:

Which value can a developer expect when referencing country,capital,cityString?

 
 
 
 

NO.67 A developer is creating a simple webpage with a button. When a user clicks this button for the first time, a message is displayed.
The developer wrote the JavaScript code below, but something is missing. The message gets displayed time a user clicks the button instead of just the first time.

Which two code lines make this code work as required? Choose 2 answers

 
 
 
 

NO.68 A developer creates a simple webpage with an input field. When a user enters text in
the input field and clicks the button, the actual value of the field must be displayed in the
console.
Here is the HTML file content:
<input type =” text” value=”Hello” name =”input”>
<button type =”button” >Display </button>
The developer wrote the javascript code below:
Const button = document.querySelector(‘button’);
button.addEvenListener(‘click’, () => (
Const input = document.querySelector(‘input’);
console.log(input.getAttribute(‘value’));
When the user clicks the button, the output is always “Hello”.
What needs to be done make this code work as expected?

 
 
 
 

NO.69 Refer to the HTML below:

Which JavaScript statement results in changing ”Tony” to ”Mr. T. ”?

 
 
 
 

NO.70 Given the code below.

What is logged to the console?

 
 
 
 

NO.71 Refer to the following array:
Let arr1 = [ 1, 2, 3, 4, 5 ];

Which two lines of code result in a second array, arr2 being created such that arr2 is not
a reference to arr1?

 
 
 
 

NO.72 Given the following code:
Counter = 0;
const logCounter = () => {
console.log(counter);
);
logCounter();
setTimeout(logCOunter, 1100);
setInterval(() => {
Counter++
logCounter();
}, 1000);
What is logged by the first four log statements?

 
 
 
 

NO.73 Which two console logs out NaN?
Choose 2 answers

 
 
 
 

NO.74 A developer implements and calls the following code when an application state change occurs:
Const onStateChange =innerPageState) => {
window.history.pushState(newPageState, ‘ ‘, null);
}
If the back button is clicked after this method is executed, what can a developer expect?

 
 
 
 

NO.75 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 ?

 
 
 
 

NO.76 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?

 
 
 
 

NO.77 Refer to the following object:

How can a developer access the fullname property for cat?

 
 
 
 

Salesforce JavaScript-Developer-I certification exam is an excellent opportunity for developers looking to demonstrate their expertise in using JavaScript to develop custom applications on the Salesforce platform. Passing the exam requires a strong understanding of JavaScript fundamentals, as well as a solid understanding of the Salesforce architecture and development best practices.

 

Tested Material Used To JavaScript-Developer-I Test Engine: https://www.testbraindump.com/JavaScript-Developer-I-exam-prep.html

Related Links: www.stes.tyc.edu.tw www.stes.tyc.edu.tw myportal.utt.edu.tt myportal.utt.edu.tt myportal.utt.edu.tt www.stes.tyc.edu.tw

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