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Salesforce JavaScript-Developer-I exam is designed for professionals who want to validate their skills and knowledge in developing JavaScript applications on the Salesforce platform. Salesforce Certified JavaScript Developer I Exam certification is intended for developers who are proficient in JavaScript and have experience in developing custom applications using Salesforce. JavaScript-Developer-I Exam covers various topics such as Lightning Web Components, Apex, and Visualforce, which are essential for building scalable and secure applications on Salesforce.

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The Salesforce JavaScript-Developer-I exam covers a wide range of topics, including the fundamentals of JavaScript, the use of JavaScript in the Salesforce platform, and best practices for developing and testing JavaScript code. It also evaluates the candidate's understanding of the Salesforce platform, including its architecture, security and data model, and its integration with other technologies. Passing the Salesforce JavaScript-Developer-I Exam demonstrates that the candidate has a deep understanding of JavaScript and its application in the Salesforce platform, and is capable of developing high-quality, scalable, and efficient custom applications in Salesforce.

Salesforce Certified JavaScript Developer I Exam Sample Questions (Q85-Q90):

NEW QUESTION # 85
Universal Containers recently launched its new landing page to host a crowd-funding 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 insidethe DOM, like the one in the code below:

All the elements includes the same ad-library-item class, They are hidden by default, and they are randomly displayed while the user navigates through the page.

A. Use the DOM inspector to remove all the elements containing the class ad-library-item.
B. Use the DOM inspector to prevent the load eventto be fired.
C. Use the browser console to execute a scriptthat prevents the load event to be fired.
D. Use the browser to execute a script that removes all the element containing the class ad-library-item.

Answer: D

NEW QUESTION # 86
Refer to 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 line 09 for the code to display 'The truck 123AB has a
weight of 5000lb.'?

A. super(plate);
B. This.plate =plate;
C. Super.plate =plate;
D. Vehicle.plate = plate;

Answer: A

NEW QUESTION # 87
Given the following code:

What is the output of line 02?

A. "undefined" 0
B. "null"
C. "x-
D. 'object"

Answer: D

NEW QUESTION # 88
Refer to the code below:

A developer import a library that creates a web server. the imported library uses events and callback to start the server.
Which code should be inserted at line 03 to set up an event and start the web server?

A. server ( (port) => (
Console.log ('Listening on' , port) ;
}};
B. server( );
C. Server .start();
D. Server. on ('connet' , (port) => (
Console.log (Listening on' port);
}};

Answer: A

NEW QUESTION # 89
Given the following code:
document.body.addEventListener(' click ', (event) => {
if (/* CODE REPLACEMENT HERE */) {
console.log('button clicked!');
)
});
Which replacement for the conditional statement on line 02 allows a developer to correctly determine that a button on page is clicked?

A. e.nodeTarget ==this
B. event.target.nodeName == 'BUTTON'
C. Event.clicked
D. button.addEventListener('click')

Answer: B

NEW QUESTION # 90
......

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