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Professional exams deserve professional preparation. The Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) package at PremiumVCEDump delivers 149 verified JavaScript-Developer-I日本語 practice questions with the one-stop service to match: demo before you buy, support after you do.

Salesforce JavaScript-Developer-I日本語 Exam Overview:

Certification Vendor:Salesforce
Exam Name:Salesforce Certified JavaScript Developer I
Exam Number:JS-Dev-001
Exam Duration:105 minutes
Certificate Validity Period:1 year (maintenance required via Salesforce certification maintenance modules)
Exam Format:Multiple Select, Multiple Choice
Available Languages:English
Passing Score:65%
Related Certifications:Salesforce Certified Platform Developer I
Salesforce Certified Platform App Builder
Salesforce Certified JavaScript Developer I
Exam Price:USD 200 (may vary by region/tax)
Real Exam Qty:60
Recommended Training:Salesforce Trailhead JavaScript Developer I Prep
Salesforce Developer Learning Paths
Exam Registration:Salesforce Certification Registration (Webassessor)
Salesforce Credentials Page
Sample Questions: DOWNLOAD DEMO
Exam Way:Online proctored or onsite testing via Kryterion Webassessor
Pre Condition:No formal prerequisites, but familiarity with JavaScript and Salesforce platform development is strongly recommended.
Official Syllabus URL:https://trailhead.salesforce.com/credentials/javascriptdeveloper1

Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:

SectionObjectives
Topic 1: Asynchronous JavaScript- Event loop and concurrency model
- Promises and async/await
- Error handling in async workflows
Topic 2: JavaScript Language Fundamentals- ES6+ syntax and features
- Data types, variables, and operators
- Functions, scope, and closures
Topic 3: Testing and Debugging- Unit testing principles
- Debugging techniques and tools
Topic 4: Salesforce Platform Integration- Security considerations in Salesforce JavaScript
- Lightning Web Components (LWC) JavaScript usage
- Calling Apex methods from JavaScript
Topic 5: Browser and DOM Interaction- Event handling and propagation
- DOM manipulation and traversal
- Browser APIs (fetch, storage, timers)

Your Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) Questions, Answered Honestly

Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) is an official Salesforce certification exam, registered under the code JavaScript-Developer-I日本語. Passing it earns the JavaScript Developer I certification, positioned at the Professional level. It also connects to Salesforce Certified Platform Developer I, Salesforce Certified Platform App Builder, Salesforce Certified JavaScript Developer I. Professional work increasingly demands professional proof, and this exam supplies exactly that.

The Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) exam contains 60 questions to be answered within 105 minutes. The candidates who struggle most are rarely the least knowledgeable; they are the least rehearsed at time allocation. Practice full timed sessions in the PremiumVCEDump engine, learn to flag and move on, and the official clock becomes a familiar companion instead of a threat.

Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) requires 65% to pass, and official registration costs USD 200 (may vary by region/tax). Since a retake bills the full USD 200 (may vary by region/tax) again, confirming readiness first is simply good economics. Run repeated scored sessions with the PremiumVCEDump practice tests and schedule the exam once the passing line sits comfortably below your typical result.

No formal prerequisites, but familiarity with JavaScript and Salesforce platform development is strongly recommended.

Vendor policies do change, so verify the current requirements before you register via the official exam page.

Sign-up for Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) is handled through the official channels below.

For your planning: the exam is delivered Online proctored or onsite testing via Kryterion Webassessor.

Salesforce recommends the following training for Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) candidates.

Round out any training with the 149 practice questions in the PremiumVCEDump JavaScript-Developer-I日本語 package, because applied repetition is what turns coursework into a passing score.

Yes. PremiumVCEDump offers a free demo of the Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) questions as part of its pre-sale service, so you can evaluate quality before choosing among the three versions. After purchase, updates are free for 365 days, and when your product expires you can extend the update service at a 50% discount.

A 100% money-back guarantee protects your purchase under clear conditions. Take the Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) exam within 60 days of purchase; if you fail, you may claim a full refund, provided the exam matches your product. Attempts within 3 days of purchase are ineligible, as are downloaded-but-unused products, free materials, and expired orders; the candidate name must match the payer name. Submit a scanned enrollment slip and the official Score Report PDF within 2 days of the exam, and claims are processed within 7 days. You may also choose an exchange: two other exam products of equal value, free, with the update service on your original purchase kept.

Delivery is instant: files unlock for download at payment and are emailed within one minute. If nothing arrives within 2 hours, check spam and contact customer service, available 24 hours. Installation is unlimited across your computers.

Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) covers 5 official domains. The largest include Browser and DOM Interaction, Salesforce Platform Integration, and JavaScript Language Fundamentals. The full breakdown is in the topics section above; review it first and your study plan practically writes itself.

Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) Sample Questions:

以下のHTMLを参照してください。
< div id= " main " >
< ul >
< li > Leo < /li >
< li > Tony < /li >
< li > Tiger < /li >
< /ul >
< /div >
JavaScriptのどの文で「Leo」が「The Lion」に変更されますか?

  • A. document.querySelectorAll( ' #main li,Leo ' ).innerHTML = ' The Lion ' ;
  • B. document.querySelectorAll( ' #main #Leo ' ).innerHTML = ' The Lion ' ;
  • C. document.querySelector( ' #main li:nth-child(1) ' ).innerHTML = ' The Lion ' ;
  • D. document.querySelector( ' #main li:second-child ' ).innerHTML = ' The Lion ' ;
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Explanation: Only visible for PremiumVCEDump members. You can sign-up / login (it's free).

テストでは以下を検索します:
<button class="blue">チェックアウト</button>
しかし、実際のHTMLは次のとおりです。
<ボタン>チェックアウト</ボタン>
テストが失敗するのは、既に存在しないクラスを想定しているためです。
これはどのような種類のテスト結果ですか?

  • A. 真の陰性
  • B. 偽陽性
  • C. 偽陰性
  • D. 真陽性
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Explanation: Only visible for PremiumVCEDump members. You can sign-up / login (it's free).

コードを参照してください。
01 console.log( ' Start ' );
02 Promise.resolve( ' Success ' ).then(function(value) {
03 console.log( ' Success ' );
04 });
05 console.log( ' End ' );
コードが正常に実行された後の出力は何ですか?

  • A. Success
    Start
    End
  • B. Start
    End
    Success
  • C. End
    Start
    Success
  • D. Start
    Success
    End
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Explanation: Only visible for PremiumVCEDump members. You can sign-up / login (it's free).

以下のコードを参照してください。
let productSKU = ' 8675309 ' ;
開発者は、常に「sku」で始まり、ゼロで埋められた19文字の長さのSKU番号を生成する必要がある。
どの文が値 sku000000008675309 を割り当てますか?

  • A. productSKU = productSKU.padStart(16, ' 0 ' ).padStart(19, ' sku ' );
  • B. productSKU = productSKU.padEnd(16, ' 0 ' ).padStart(19, ' sku ' );
  • C. productSKU = productSKU.padEnd(16, ' 0 ' ).padStart( ' sku ' );
  • D. productSKU = productSKU.padStart(19, ' 0 ' ).padStart( ' sku ' );
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Explanation: Only visible for PremiumVCEDump members. You can sign-up / login (it's free).

ある開発者が、既存のクライアントからのAPIリクエストを処理する新しいWebサーバーの開発をチーム内で主導している。チームはNode.js上で動作するWebサーバーを希望しており、新しいWebフレームワークであるMinimalist.jsの使用を検討している。しかし、リード開発者は、既にコミュニティが存在する、より実績のあるバックエンドフレームワークの使用を提唱したいと考えている。
リード開発者はどの2つのフレームワークを推奨するだろうか?

  • A. 次へ
  • B. Angular
  • C. Next.js
  • D. ギャツビー
Reveal Solution  Discussion  0

Correct Answer: A,C  🗳️

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