Salesforce JavaScript-Developer-I日本語 valid exam dumps : Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
- Exam Code: JavaScript-Developer-I-JPN
- Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
- Updated: Nov 05, 2026
- Q&As: 149 Questions and Answers
About Salesforce JavaScript-Developer-I日本語 Valid Exam Braindumps
More candidates choose ValidDumps for the JavaScript-Developer-I日本語 exam every month, and many come back for their next certification. Repeat customers are the review that matters most — earned one order of 149 practice questions at a time.
Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Testing | 7% | - Testing frameworks and assertions - Unit testing concepts - Test doubles and mocks - Code coverage and best practices |
| Topic 2: Variables, Types, and Collections | 23% | - Type coercion and conversion rules - Array methods and data manipulation - JSON parsing and usage - Working with strings, numbers, dates, and booleans - Truthy and falsy values - Variable declaration and initialization |
| Topic 3: Server-Side JavaScript | 8% | - Node.js fundamentals and runtime - Module system and require/import - Command-line tools and scripts - Core Node.js modules |
| Topic 4: Asynchronous Programming | 13% | - Promises and chaining - Event loop and micro/macro tasks - Async/await syntax - Fetch API and HTTP requests - Callbacks and callback hell |
| Topic 5: Debugging and Error Handling | 7% | - Debugging tools and breakpoints - Error types and exception handling - Defensive programming practices - Console methods and logging |
| Topic 6: Browsers and Events | 17% | - Window and document object properties - Browser APIs and Web Storage - Event handling, propagation, and delegation - Document Object Model (DOM) manipulation - Script loading and execution order |
| Topic 7: Objects, Functions, and Classes | 25% | - Function definitions, parameters, and scope - Modules and imports/exports - Closures and execution context - Object creation, properties, and methods - Decorators and advanced function patterns - Class syntax, inheritance, and prototypes |
Common Questions About the Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) Exam
The JavaScript-Developer-I日本語 exam is a Salesforce certification exam validating the Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) syllabus shown above. It belongs to these credential paths: Salesforce Certified Platform Developer I, Salesforce Certified Lightning Web Components Specialist. Candidates in 2026 prepare for it with ValidDumps's 149 practice questions, available as a printable PDF, a Windows Desktop Test Engine, and an Online Test Engine — three versions of the same materials.
Online proctored or onsite at authorized testing centers Register for the Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) exam through these official channels:
After booking, ValidDumps delivers your practice questions within 1 minute — preparation starts the same day.
Three versions of the same study materials: a printable, expert-prepared PDF with free demo download and instant access; a Desktop Test Engine for Windows that simulates the real exam with two practice modes and works offline; and an Online Test Engine for any browser on Windows, Mac, Android, and iOS with test history and performance review. All 149 practice questions are identical across versions. Every purchase includes 365 days of free updates, a 50% renewal discount afterward, and unlimited computer installations — and the website runs discounts at intervals, so timing your purchase can save a little more.
The Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) exam contains 60 scored + up to 5 unscored to complete within 105 minutes. Timed simulation in the ValidDumps Desktop Test Engine teaches that rhythm before exam day does.
The official Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) outline defines 7 domains. The leading three are Testing (7%), Server-Side JavaScript (8%), and Debugging and Error Handling (7%). The full list is in the topics section above, and ValidDumps's 149 practice questions cover each one.
Salesforce recommends these training resources for the Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) exam:
Follow the training with steady self-testing — the 149 practice questions from ValidDumps help you apply theory and fill any gaps the training leaves.
No formal prerequisites; 1–2 years of JavaScript development experience recommended Since requirements change over time, confirm the latest on the official Salesforce exam page before scheduling.
ValidDumps issues a full refund if you take the Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) exam within 60 days of purchase and do not pass. The policy does not apply if the exam is taken within 3 days of purchase, if the exam was never actually taken, or to free materials or expired orders, and the candidate name must match the payer name. Submit a scan of your enrollment slip and the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Alternatively, exchange for two free exam products of equal value and keep your original update service. Orders arrive by email within 1 minute — contact support if nothing arrives within 2 hours.
The Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) exam requires 65% to pass, and registration costs USD 200 (+ applicable taxes). A failed attempt means paying the same fee again — a readiness check with the ValidDumps engines before booking is the cheaper option.
Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) Sample Questions:
以下のコードを参照してください。
01 let timedFunction = () = > {
02 console.log( 'タイマーが呼び出されました。' );
03 };
04
05 let timerId = setInterval(timedFunction, 1000);
開発者がスケジュールされたタイマー関数をキャンセルできるのは、どのステートメントですか？
- A. removeInterval(timerId);
- B. clearInterval(timedFunction);
- C. clearInterval(timerId);
- D. removeInterval(timedFunction);
Correct Answer: C 🗳️
Explanation: Only visible for ValidDumps members. You can sign-up / login (it's free).
元のコード:
01 let requestPromise = client.getRequest;
03 requestPromise().then((response) = > {
04 handleResponse(response);
05 });
開発者は、PromiseベースのGETリクエストで発生するエラーを適切に処理したいと考えています。
どのコード修正が正しいですか？
- A. エラーにはfinallyハンドラを使用する
- B. (Aの複製)
- C. Promiseチェーンに.catchを追加する
- D. requestPromise().then(...) の前後に try/catch ブロックを記述
Correct Answer: C 🗳️
Explanation: Only visible for ValidDumps members. You can sign-up / login (it's free).
与えられた条件:
const str = ' Salesforce ' ;
どの2つの文が「売上」につながりますか？
- A. str.substring(1, 5);
- B. str.substring(0, 5);
- C. str.substr(1, 5);
- D. str.substr(0, 5);
Correct Answer: B,D 🗳️
Explanation: Only visible for ValidDumps members. You can sign-up / login (it's free).
JavaScriptブラウザコンソールを使用して実行できる操作は何ですか？
- A. ページのパフォーマンスを示すレポートを表示する
- B. セキュリティクッキーの表示と変更
- C. ページに関係のないコードを実行する
- D. ページのDOMを表示および変更する
- E. ページのDOMとJavaScriptコードを変更します
Correct Answer: D 🗳️
Explanation: Only visible for ValidDumps members. You can sign-up / login (it's free).
コードを参照してください。
01 const event = new CustomEvent(
02 // コードが欠落しています
03 );
04 obj.dispatchEvent(event);
開発者は、recordId に関する情報を送信するために、update というカスタムイベントをディスパッチする必要があります。
2行目に挿入できる2つの選択肢はどれですか？
- A. '更新'、{詳細: {レコードID: '123abc'}}
- B. { type: ' update ' , recordId: ' 123abc ' }
- C. '更新'、'123abc'
- D. '更新'、{ recordId: '123abc' }
Correct Answer: A,D 🗳️
Explanation: Only visible for ValidDumps members. You can sign-up / login (it's free).
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