Salesforce JavaScript-Developer-I日本語 : Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
- Exam Code: JavaScript-Developer-I日本語
- Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
- Updated: Oct 21, 2026 Q & A: 149 Questions and Answers
About Pass4guide Salesforce JavaScript-Developer-I日本語 Latest Prep Cram
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).
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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
Meticulous experts
Our company sincerely invited many professional and academic experts who are diligently keeping eyes on accuracy and efficiency of JavaScript-Developer-I日本語 practice materials for many years, which means the Salesforce Developer valid cram are truly helpful and useful. With a bunch of experts who are intimate with exam at hand, our JavaScript-Developer-I日本語 practice materials are becoming more and more perfect in all aspects. So our reputed JavaScript-Developer-I日本語 valid cram will be your best choice. The exam may be quite complicated and difficult for you, but with our JavaScript-Developer-I日本語 training vce, you can pass it easily.
Stimuli of final aim
Best Salesforce practice materials like ours like catalyst to stimulate your efficiency to pass the exam. They cover the most essential knowledge and the newest information the society required now. All content are compiled by elites in this area and they also update our Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) vce guide to supplement more information into them frequently. Once we have the new renewals, we will send them to your mailbox. We serve as a companion to help you resolve any problems you may encounter in your review course. You can trust our JavaScript-Developer-I日本語 practice questions as well as us.
Instant Download: Our system will send you the JavaScript-Developer-I日本語 braindumps files you purchase in mailbox in a minute after payment. (If not received within 12 hours, please contact us. Note: don't forget to check your spam.)
Free demos
We offer free demos on approval and give you chance have an experimental trial. To some regular customers who trust our Salesforce Developer practice questions, they do not need to download them but to some other new buyers, our demos will help you have a roughly understanding of our JavaScript-Developer-I日本語 pdf guide. After browsing our demos you can have a shallow concept. If you want to get to know the most essential content, place your order as soon as possible, you will not regret.
Perfect products
Coherent arrangement of the most useful knowledge about the JavaScript-Developer-I日本語 practice exam makes us be perfect among the market all these years. With the combination of effort and profession, we have become the leading products in this area. And our JavaScript-Developer-I日本語 practice materials are being tested viable with the trial of time. After using our Salesforce prep torrent, they all get satisfactory outcomes such as pass the exam smoothly. If you failed the exam with our JavaScript-Developer-I日本語 practice materials, we promise to give back full refund. Or you can request to free change other version. It is up to you and we are willing to offer help. We have always been received positive compliments on high quality and accuracy of our JavaScript-Developer-I日本語 practice materials. And we treat those comments with serious attitude and never stop the pace of making our Salesforce JavaScript-Developer-I日本語 practice materials do better.
Dear friends, as you know, the exam date is approaching, and we must here arouse your attention that you have limited time. How to smoothly pass the JavaScript-Developer-I日本語 practice exam and get the desirable certificate is very important. Our JavaScript-Developer-I日本語 valid cram is full of important knowledge to assimilate. And by make full use of these contents, many former customer have realized their dreams. So many people assign their success to our JavaScript-Developer-I日本語 prep torrent. Our JavaScript-Developer-I日本語 practice materials are the fruitful outcome of our collective effort. Now please get acquainted with our JavaScript-Developer-I日本語 practice materials as follows.
Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Variables, Types, and Collections | 23% | - Type coercion and conversion rules - Working with strings, numbers, dates, and booleans - Array methods and data manipulation - Variable declaration and initialization - JSON parsing and usage - Truthy and falsy values |
| Asynchronous Programming | 13% | - Promises and chaining - Callbacks and callback hell - Fetch API and HTTP requests - Event loop and micro/macro tasks - Async/await syntax |
| Debugging and Error Handling | 7% | - Console methods and logging - Defensive programming practices - Debugging tools and breakpoints - Error types and exception handling |
| Server-Side JavaScript | 8% | - Command-line tools and scripts - Core Node.js modules - Module system and require/import - Node.js fundamentals and runtime |
| Objects, Functions, and Classes | 25% | - Closures and execution context - Modules and imports/exports - Function definitions, parameters, and scope - Class syntax, inheritance, and prototypes - Object creation, properties, and methods - Decorators and advanced function patterns |
| Testing | 7% | - Test doubles and mocks - Testing frameworks and assertions - Code coverage and best practices - Unit testing concepts |
| Browsers and Events | 17% | - Script loading and execution order - Document Object Model (DOM) manipulation - Event handling, propagation, and delegation - Window and document object properties - Browser APIs and Web Storage |
Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) Sample Questions:
修正されたコード:
let obj = {
foo: 1,
bar: 2
};
let output = [];
for (let something in obj) {
output.push(something);
}
console.log(出力);
11行目の出力は何ですか？
- A. [1, 2]
- B. [ " foo:1 " , " bar:2 " ]
- C. [ " foo " , " bar " ]
- D. [ " bar " , " foo " ]
Correct Answer: C 🗳️
Explanation: Only visible for Pass4guide members. You can sign-up / login (it's free).
コードを参照してください。
01 let car1 = new Promise((_, reject) = >
02 setTimeout(reject, 2000, " Car 1 crashed in " ));
03 let car2 = new Promise(resolve = >
04 setTimeout(resolve, 1500, " Car 2 completed " ));
05 let car3 = new Promise(resolve = >
06 setTimeout(resolve, 3000, " Car 3 completed " ));
07
08 Promise.race([car1, car2, car3])
09 .then(value = > {
10 let result = ' $(value) the race. ' ;
11 })
12 .catch(err = > {
13 console.log( " Race is cancelled. " , err);
14 });
Promise.raceが実行されたとき、resultの値は何ですか？
- A. レース中に1号車がクラッシュしました。
- B. 3号車はレースを完走しました。
- C. 2号車はレースを完走しました。
- D. レースは中止されました。
Correct Answer: C 🗳️
Explanation: Only visible for Pass4guide members. You can sign-up / login (it's free).
値が与えられたとき、開発者はその値がNaNかどうかを検出するために、どの2つの方法を使用できますか？
- A. value == NaN
- B. isNaN(value)
- C. Object.is(value, NaN)
- D. value === Number.NaN
Correct Answer: B,C 🗳️
Explanation: Only visible for Pass4guide members. You can sign-up / login (it's free).
以下のコードスニペットを参照してください。
01 let array = [1, 2, 3, 4, 4, 5, 4, 4];
02 for (let i = 0; i < array.length; i++) {
03 if (array[i] === 4) {
04 array.splice(i, 1);
05 i--;
06 }
07 }
コード実行後の配列の値は何ですか？
- A. [1, 2, 3, 4, 5, 4]
- B. [1, 2, 3, 4, 5, 4, 4]
- C. [1, 2, 3, 5]
- D. [1, 2, 3, 4, 4, 5, 4]
Correct Answer: C 🗳️
Explanation: Only visible for Pass4guide members. You can sign-up / login (it's free).
開発者は、新しいユーザー名を登録しようとするユーザーにメッセージを返すために、以下のコードを作成します。ユーザー名が利用可能な場合、3行目でmsgという名前の変数が宣言され、値が割り当てられます。
function getAvailabilityMessage(item) {
if (getAvailability(item)) {
var msg = "ユーザー名が利用可能です";
msgを返します。
}
}
- A. undefined
- B. " newUserName "
- C. " msg is not defined "
- D. " Username available "
Correct Answer: D 🗳️
Explanation: Only visible for Pass4guide members. You can sign-up / login (it's free).
Viewing page 1 out of 30 pages.
Viewing questions 1-5 out of 149 questions.
Related Exam
- Plat-Dev-301 pass guide
- JavaScript-Developer-I pass guide
- AP-202 pass guide
- Plat-Arch-202 pass guide
- OMS-435 pass guide
- B2B-Commerce-Developer pass guide
- OmniStudio-Developer pass guide
- Development-Lifecycle-and-Deployment-Designer pass guide
- DEX-450J pass guide
- DEX-450 pass guide
- JavaScript-Developer-I-JPN pass guide
Related Certifications
Over 59816+ Satisfied Customers
What Clients Say About Us
Why Choose Us
QUALITY AND VALUE
Pass4guide Practice Exams are written to the highest standards of technical accuracy, using only certified subject matter experts and published authors for development - no all study materials.
TESTED AND APPROVED
We are committed to the process of vendor and third party approvals. We believe professionals and executives alike deserve the confidence of quality coverage these authorizations provide.
EASY TO PASS
If you prepare for the exams using our Pass4guide testing engine, It is easy to succeed for all certifications in the first attempt. You don't have to deal with all dumps or any free torrent / rapidshare all stuff.
TRY BEFORE BUY
Pass4guide offers free demo of each product. You can check out the interface, question quality and usability of our practice exams before you decide to buy.
Our Client
