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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
Salesforce JavaScript Developer I Certification Path
You must get an idea of exactly what this certification is, before investing your valuable time, effort, or money in Salesforce. The demand and the need for Salesforce certified professionals are rapidly growing and so Salesforce JavaScript Developer I Certification is becoming more and more popular. Different types of online training sessions are provided such as Intellipaat 's online training sessions for the Salesforce JavaScript Developer I Qualification . It is instructor-led teaching by subject professionals working in major organizations. This style of training includes live sessions with the teacher, along with a forum where you can clear all your course-based doubts.
Self-paced sessions are also offered. This training mode involves pre-recorded video sessions. You can conveniently return to these talks and revisit the subjects you have skipped whether you have any difficulties with the lectures or have difficulty keeping up with the online meetings. You will also use these sessions to finish your exercise at your speed while you access these online lessons throughout your life.
How to Prepare for Salesforce JavaScript Developer I Exam
Preparation Guide for Salesforce JavaScript Developer I Exam
Introduction
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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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How to Study the Salesforce JavaScript-Developer-I Exam
The best study material one can get is the JavaScript-Developer-I practice exam dumps. To ensure good grades, do attempt the JavaScript-Developer-I practice exams. The JavaScript Developer I from Salesforce typically has 1-2 years of experience as a JavaScript developer with the following JavaScript topics.
Scope of Variables
Functions (more functions in higher order)
JavaScript on the backend
Discharge
Forms of data and operators
Monitor (agnostic platform)
Item Model Document
Strings
Asynchronous Programming
Modules
Activities
Classes
Conversion type (inclusive versus explicit)
Control of Mistake
Objects & Arrays: Data Structures
To prepare for this test, we advise a combination of practical experience, completion of training courses, pathways and self-study in the areas listed in the examination outline section of this examination guide.
Salesforce JavaScript-Developer-I Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Debugging and Error Handling | 7% | - Defensive programming practices - Error types and exception handling - Console methods and logging - Debugging tools and breakpoints |
| Server-Side JavaScript | 8% | - Command-line tools and scripts - Core Node.js modules - Node.js fundamentals and runtime - Module system and require/import |
| Browsers and Events | 17% | - Browser APIs and Web Storage - Script loading and execution order - Event handling, propagation, and delegation - Window and document object properties - Document Object Model (DOM) manipulation |
| Variables, Types, and Collections | 23% | - Working with strings, numbers, dates, and booleans - JSON parsing and usage - Truthy and falsy values - Type coercion and conversion rules - Variable declaration and initialization - Array methods and data manipulation |
| Testing | 7% | - Test doubles and mocks - Unit testing concepts - Code coverage and best practices - Testing frameworks and assertions |
| Objects, Functions, and Classes | 25% | - Object creation, properties, and methods - Function definitions, parameters, and scope - Decorators and advanced function patterns - Modules and imports/exports - Class syntax, inheritance, and prototypes - Closures and execution context |
| Asynchronous Programming | 13% | - Event loop and micro/macro tasks - Callbacks and callback hell - Async/await syntax - Promises and chaining - Fetch API and HTTP requests |
Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions:
A 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 formats, what should the new package version number be?
- A. 1.2.3
- B. 1.1.4
- C. 2.0.0
- D. 1.2.0
Correct Answer: D 🗳️
Explanation: Only visible for DumpsValid members. You can sign-up / login (it's free).
Given two expressions var1 and var2, what are two valid ways to return the concatenation of the two expressions and ensure it is data type string?
- A. String(var1).concat(var2)
- B. String.concat(var1 + var2)
- C. var1.toString() + var2.toString()
- D. var1 + var2
Correct Answer: A,C 🗳️
Explanation: Only visible for DumpsValid members. You can sign-up / login (it's free).
01 function Monster() { this.name = ' hello ' ; };
02 const m = Monster();
What happens due to the missing new keyword?
- A. window.name is assigned to ' hello ' and the variable m remains undefined.
- B. window.m is assigned the correct object.
- C. The m variable is assigned the correct object but this.name remains undefined.
- D. The m variable is assigned the correct object.
Correct Answer: A 🗳️
Explanation: Only visible for DumpsValid members. You can sign-up / login (it's free).
Refer to the code:
01 const exec = (item, delay) = >
02 new Promise(resolve = > setTimeout(() = > resolve(item), delay));
03
04 async function runParallel() {
05 const [result1, result2, result3] = await Promise.all(
06 [exec( ' x ' , ' 100 ' ), exec( ' y ' , ' 500 ' ), exec( ' z ' , ' 100 ' )]
07 );
08 return `parallel is done: ${result1}${result2}${result3}`;
09 }
Which two statements correctly execute runParallel()?
- A. runParallel().then(function(data){
return data;
}); - B. runParallel().done(function(data){
return data;
}); - C. async runParallel().then(data);
- D. runParallel().then(data);
Correct Answer: A,D 🗳️
Explanation: Only visible for DumpsValid members. You can sign-up / login (it's free).
A class was written to represent regular items and sale items. Code:
01 let regItem = new Item( ' Scarf ' , 55);
02 let saleItem = new SaleItem( ' Shirt ' , 80, .1);
03 Item.prototype.description = function() { return ' This is a ' + this.name; }
04 console.log(regItem.description());
05 console.log(saleItem.description());
06
07 SaleItem.prototype.description = function() { return ' This is a discounted ' + this.name; }
08 console.log(regItem.description());
09 console.log(saleItem.description());
What is the output?
- A. This is a Scarf
Uncaught TypeError: saleItem.description is not a function
This is a Shirt
This is a discounted Shirt - B. This is a Scarf
Uncaught TypeError: saleItem.description is not a function
This is a Scarf
This is a discounted Shirt - C. This is a Scarf
This is a Shirt
This is a Scarf
This is a discounted Shirt - D. This is a Scarf
This is a Shirt
This is a discounted Scarf
This is a discounted Shirt
Correct Answer: C 🗳️
Explanation: Only visible for DumpsValid members. You can sign-up / login (it's free).
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Viewing questions 1-5 out of 149 questions.
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