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How to book the Salesforce JavaScript-Developer-I Exam
There are the following steps for registering the Salesforce JavaScript Developer I exam. Step 1: Visit Salesforce Exam Registration Step 2: Signup/Login to Salesforce account Step 4: Select Date, time and confirm with the payment method
For more info read reference:
Salesforce JavaScript-Developer-I Certification leaning site Salesforce JavaScript-Developer-Is Certification resources
How to Prepare for Salesforce JavaScript Developer I Exam
Preparation Guide for Salesforce JavaScript Developer I Exam
Introduction
Salesforce is a solution for managing customer relationships that unite customers and companies. This is an interactive CRM platform that provides a single, shared view of every client in all the divisions including marketing, distribution, exchange, and operation. Provide the clients with the individual experience Salesforce demand 360 product via the Integrated CRM Platform. It delivers solid and related goods to boost marketing, revenue, exchange, operation, IT, and more. Salesforce is a digital cloud computing (SaaS) firm specializing in the management of client relationships (CRMs). There was a mistake. The app is now the number one of consumer satisfaction and allows organizations to track customer behavior, advertise to consumers, and more. Salesforce is common because it is bundled with features such as contact management, workflow development, task management, incentive monitoring, teamwork tools, customer experience tools, analytics, and interactive, smartphone dashboard.
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
Salesforce JavaScript-Developer-I Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I |
| Exam Number: | JS-Dev-101 |
| Related Certifications: | Salesforce Certified JavaScript Developer I Credential |
| Real Exam Qty: | 60 (plus up to 5 unscored pilot questions) |
| Passing Score: | 65% |
| Exam Format: | Multiple-choice, Multiple-select |
| Exam Price: | $200 USD |
| Certificate Validity Period: | None (Credential does not expire) |
| Available Languages: | English |
| Exam Duration: | 105 minutes |
| Sample Questions: | Salesforce JavaScript-Developer-I Sample Questions |
| Exam Way: | Online (proctored via Pearson VUE) or On-site (at a Pearson VUE testing center) |
| Pre Condition: | None required. 1-2 years of JavaScript development experience (front-end and/or back-end) is strongly recommended. Note: To earn the full credential, candidates must also pass the Lightning Web Components Specialist Superbadge in addition to the JS-Dev-101 exam. |
| Official Syllabus URL: | https://trailhead.salesforce.com/en/credentials/javascriptdeveloperi |
Introduction to Salesforce JavaScript Developer I Exam
The credential Salesforce Accredited JavaScript Developer I is meant for applicants who build JavaScript applications for the web stack on the front-end and/or back-end.This validates both key JavaScript expertise and functional skills for applicants, for example, Lightning Components Platform, and Lightning Web Component technology relevant to JavaScript. Lightning web elements are personalised HTML elements that are designed with traditional HTML and modern JavaScript.
The Salesforce JavaScript Developer I certification requires two parts: the multiple-choice test given by the JavaScript Developer I and the Superbadge Lightning Web Components. In any order, all these credentials can be accessed. A Salesforce Certified Javascript Developer I certification is immediately obtained by adding these two certificates. The qualification applicant for Salesforce JavaScript Accredited Developer I will use the JavaScript language to build front-end or back-end software in one or more frameworks. The applicant will plan, build and evaluate effective , safe and reusable solutions.
The candidate can use JavaScript-specific programming style patterns and can use CSS , HTML, and other languages for integrating JavaScript. With Lightning Web Components, any JavaScript developer can build on Salesforce easily. This means that millions of JavaScript developers around the world will code on Salesforce without learning anything new. Developers can create and deploy brand-new fast apps on Salesforce using the current Lightning Platform development services portfolio and the modern JavaScript language. Salesforce JavaScript Developer I Certificate from Salesforce is designed to help Salesforce partners, customers and employees working on JavaScript as well as the Lightning Component Platform, know-how and knowledge and creation of Lightning web components (LWC's).
Salesforce JavaScript-Developer-I Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Variables, Types, and Collections | 23% | - JSON parsing and manipulation - Truthy and falsy evaluations - Strings, numbers, and dates - Type coercion and conversion - Arrays and collections - Variable declarations and initialization - Primitive and complex data types |
| Topic 2: Debugging and Error Handling | 7% | - Breakpoints and code inspection - Custom error types - Console methods for debugging - Error handling techniques (try/catch/finally) |
| Topic 3: Testing | 7% | - Unit testing concepts - Writing and modifying unit tests - Test coverage and reliability - Test effectiveness evaluation |
| Topic 4: Asynchronous Programming | 13% | - Event loop and execution flow - Promises (creation, chaining, error handling) - Asynchronous patterns for business requirements - Async/Await syntax - Callbacks |
| Topic 5: Server Side JavaScript | 8% | - Server-side JavaScript implementations - Package management (npm) - Node.js fundamentals - Core Node.js modules - CLI commands |
| Topic 6: Browser and Events | 17% | - Event handling and listeners - Browser Developer Tools usage - Event propagation (bubbling and capturing) - Browser-specific APIs - DOM manipulation - Interacting with forms and user input |
| Topic 7: Objects, Functions, and Classes | 25% | - Higher-order functions - Prototypal inheritance - Execution flow and context - Arrow functions - ES6 classes and inheritance - Object creation and manipulation - Variable scope and closures - Function declarations and expressions - Modules and decorators |
Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions:
A developer wants to use a module called DatePrettyPrint.
This module exports one default function called printDate().
How can the developer import and use printDate()?
- A. import DatePrettyPrint() from ' /path/DatePrettyPrint.js ' ;
printDate(); - B. import printDate from ' /path/DatePrettyPrint.js ' ;
printDate(); - C. import printDate from ' /path/DatePrettyPrint.js ' ;
DatePrettyPrint.printDate(); - D. import DatePrettyPrint from ' /path/DatePrettyPrint.js ' ;
DatePrettyPrint.printDate();
Correct Answer: B 🗳️
Explanation: Only visible for TopExamCollection members. You can sign-up / login (it's free).
Given the JavaScript below:
function onLoad() {
console.log( " Page has loaded! " );
}
Where can the developer see the log statement after loading the page in the browser?
- A. In the browser performance tools log
- B. On the webpage console log
- C. On the browser JavaScript console
- D. On the terminal console running the web server
Correct Answer: C 🗳️
Explanation: Only visible for TopExamCollection members. You can sign-up / login (it's free).
for (let number = 2; number < = 5; number += 1) {
// faster code statement here
}
Which statement meets the requirements to log an error when the Boolean statement evaluates to false?
- A. assert(number + 2 === 0);
- B. console.assert(number + 2 === 0);
- C. console.error(number + 2 === 0);
- D. console.classy(number + 2 === 0);
Correct Answer: B 🗳️
Explanation: Only visible for TopExamCollection members. You can sign-up / login (it's free).
function myFunction() {
a = a + b;
var b = 1;
}
myFunction();
console.log(a);
console.log(b);
Which statement is correct?
- A. Line 02 throws a reference error, therefore line 03 is never executed.
- B. Both line 02 and 03 are executed, and the variables are hoisted.
- C. Line 08 outputs the variable, but line 09 throws an error.
- D. Both line 02 and 03 are executed, but the values printed are undefined.
Correct Answer: A 🗳️
Explanation: Only visible for TopExamCollection members. You can sign-up / login (it's free).
A developer imports:
import printPrice from ' /path/PricePrettyPrint.js ' ;
What must be true about printPrice for this import to work?
- A. printPrice must be an all export
- B. printPrice must be a multi export
- C. printPrice must be a named export
- D. printPrice must be the default export
Correct Answer: D 🗳️
Explanation: Only visible for TopExamCollection members. You can sign-up / login (it's free).
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