Salesforce JavaScript-Developer-I-JPN Questions & Answers - in .pdf
- Total Q&A: 149
- Update: Nov 06, 2026
- Price: $69.99
- Vendor: Salesforce
- Exam Code: JavaScript-Developer-I-JPN
- Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
- Features:
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- Printable Salesforce JavaScript-Developer-I-JPN PDF Format.
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- Exact Salesforce JavaScript-Developer-I-JPN Exam Questions with Correct Answers, verified by Experts with years of Experience in IT Field.
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Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Topic | Details |
|---|
| Topic 1 | - Debugging and Error Handling: This section will measure the ability of JavaScript programmer to properly handle errors and debug JavaScript code. You will be expected to apply debugging techniques, such as using the console and breakpoints, to resolve issues. Proper error handling is crucial, and the exam will evaluate your skills in managing and correcting errors efficiently within your code.
|
| Topic 2 | - Server Side JavaScript: This section focuses on Node.js and server-side JavaScript. Salesforce JavaScript programmers will be tested on their ability to identify appropriate Node.js implementations and commands for given scenarios. Additionally, you will need to recognize which Node.js core modules, libraries, and package management solutions fit specific requirements, reflecting your understanding of server-side development with JavaScript.
|
| Topic 3 | - Browser and Events: The topic will challenge your ability to work with events, event handlers, and the DOM. You will need to demonstrate how to manage event propagation and utilize browser-specific APIs. Additionally, proficiency in using browser developer tools to investigate code behavior will be tested, making it crucial for you to understand browser interactions thoroughly.
|
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
For more info read reference:
Salesforce JavaScript-Developer-I Certification leaning site
Salesforce JavaScript-Developer-Is Certification resources
Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) Sample Questions:
Question #1
開発者は、universalContainerslib という名前のモジュールを使用し、そこから関数を呼び出したいと考えています。開発者は、モジュールからすべての関数をインポートし、foo と bar という関数を呼び出すにはどうすればよいでしょうか？
A. import {foo, bar} from ' /path/universalContainerslib.js ' ;
foo();
bar();
B. import all from ' /path/universalContainerslib.js ' ;
universalContainerslib.foo();
universalContainerslib.bar();
C. import * as lib from ' /path/universalContainerslib.js ' ;
lib.foo();
lib.bar();
D. import * from ' /path/universalContainerslib.js ' ;
universalContainerslib.foo();
universalContainerslib.bar();
Question #2
以下のコードを参照してください。
01 let o = {
02 get js() {
03 let city1 = String( ' St. Louis ' );
04 let city2 = String( ' New York ' );
05
06 return {
07 firstCity: city1.toLowerCase(),
08 secondCity: city2.toLowerCase(),
09 }
10 }
11 }
開発者は、o.js.secondCityを参照することでどのような価値を期待できるのでしょうか？
A. An error
B. ' new york '
C. ' New York '
D. undefined
Question #3
以下のコードを参照してください。
flag();
function flag() {
console.log( ' flag ' );
}
const anotherFlag = () = > {
console.log( ' another flag ' );
}
anotherFlag();
このコードブロックの実行結果は何ですか？
A. エラーが発生しました。
B. コンソールには「フラグ」のみがログ出力されます。
C. コンソールに「フラグ」と「別のフラグ」がログ出力されます。
D. コンソールに「flag」とログが出力され、その後エラーが発生します。
Question #4
開発者がボタン付きのシンプルなウェブページを作成しています。ユーザーがこのボタンを初めてクリックすると、メッセージが表示されます。
開発者は以下のJavaScriptコードを記述しましたが、何かが欠けています。メッセージが初回クリック時だけでなく、ユーザーがボタンをクリックするたびに表示されてしまいます。
01 function listen(event) {
02
03 alert( 'やあ！僕はジョン・ドゥだよ' );
04
05 }
06 button.addEventListener('click', listen);
どの2行のコード行が、このコードを要求どおりに動作させるのでしょうか？
A. 6行目に、button.addEventListener()にonceというオプションを追加します。
B. 4行目でevent.stopPropagation()を使用してください。
C. 2行目で、event.firstを使用して、最初の実行かどうかをテストします。
D. 4行目で button.removeEventListener( ' click ' , listen); を使用してください。
Question #5
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. 真陽性
B. 真の陰性
C. 偽陰性
D. 偽陽性
Solutions:
Question #1
Correct Answer: C | Question #2
Correct Answer: B | Question #3
Correct Answer: C | Question #4
Correct Answer: A,D | Question #5
Correct Answer: C |
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