JavaScript-Developer-I認定資格試験、JavaScript-Developer-Iトレーリングサンプル

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Salesforce JavaScript-Developer-I Exam Overview:

Certification Vendor:	Salesforce
Exam Name:	Salesforce Certified JavaScript Developer I Exam
Exam Number:	JS-Dev-101 / JavaScript-Developer-I
Passing Score:	65%
Related Certifications:	Salesforce Certified Platform Developer I Salesforce Certified Lightning Web Components Specialist
Exam Price:	USD 200 (+ applicable taxes)
Real Exam Qty:	60 scored + up to 5 unscored
Available Languages:	Japanese, English
Exam Format:	Multiple-choice, Multiple-select
Exam Duration:	105 minutes
Certificate Validity Period:	No expiration; requires regular maintenance via Trailhead modules
Recommended Training:	Salesforce JavaScript Developer I Certification Prep
Exam Registration:	Salesforce Certification Registration
Sample Questions:	Salesforce JavaScript-Developer-I Sample Questions
Exam Way:	Online proctored or onsite at authorized testing centers
Pre Condition:	No formal prerequisites; 1–2 years of JavaScript development experience recommended
Official Syllabus URL:	https://trailhead.salesforce.com/credentials/javascript-developer-i

>> JavaScript-Developer-I認定資格試験 <<

JavaScript-Developer-Iトレーリングサンプル、JavaScript-Developer-I専門トレーリング

模擬試験の準備をしている場合、当社のJavaScript-Developer-Iテスト模擬ファイルが最良の選択であることを確認できます。当社よりも優れた教材を見つけることはできません。 JavaScript-Developer-I準備資料には多くの利点があります。JavaScript-Developer-Iトレーニングガイドのデモを無料でダウンロードして、JavaScript-Developer-I準備ガイドの特別な機能を詳しく知ることができます。また、JavaScript-Developer-I試験準備の品質もわかります。 JavaScript-Developer-I試験問題を気に入っていただけることを願っています。

Salesforce JavaScript-Developer-I試験を受験するには、候補者はJavaScriptプログラミングとSalesforceプラットフォームの基本的な理解を持っている必要があります。また、Apex、Visualforce、およびLightningコンポーネントなどのSalesforceツールやテクノロジーを使用した経験が必要です。試験は複数選択問題で構成されており、候補者は合格点を取得して認定を受ける必要があります。

Salesforce Certified JavaScript Developer (JS-Dev-101) 認定 JavaScript-Developer-I 試験問題 (Q114-Q119):

質問 # 114
Universal Containers recently launched its new landing page to host a crowd-funding campaign. The page uses an external library to display some third-party ads. Once the page is fully loaded, it creates more than 50 new HTML items placed randomly inside the DOM, like the one in the code below:

All the elements includes the same ad-library-item class, They are hidden by default, and they are randomly displayed while the user navigates through the page.

A. Use the browser to execute a script that removes all the element containing the class ad-library-item.
B. Use the DOM inspector to prevent the load event to be fired.
C. Use the browser console to execute a script that prevents the load event to be fired.
D. Use the DOM inspector to remove all the elements containing the class ad-library-item.

正解：A

質問 # 115
A developer wants to set up a secure web server with Node.js. The developer creates a
directory locally called app-server, and the first file is app-server/index.js
Without using any third-party libraries, what should the developer add to index.js to create the
secure web server?

A. const http =require('http');
B. const https =require('https');
C. const tls = require('tls');
D. const server =require('secure-server');

正解：B

質問 # 116
Given the code below:

Which method can be used to provide a visual representation of the list of users and to allow sorting by the name or email attribute?

A. console.group(usersList) ;
B. console.table(usersList) ;
C. console.groupCol lapsed (usersList) ;
D. console.info(usersList) ;

正解：A

質問 # 117
A developer is setting up a new Node.js server with a client library that is built using events and callbacks.
The library:
Will establish a web socket connection and handle receipt of messages to theserver Will be imported with require, and made available with a variable called we.
The developer also wants to add error logging if a connection fails.
Given this info, which code segment shows the correct way to set up a client with two events that listen at execution time?

A. ws.connect (( ) => {console.log('connected to client'); }).catch((error) => { console.log('ERROR' , error); }};
B. try{ws.connect (( ) => {console.log('connected to client'); });} catch(error) { console.log('ERROR',error); };}
C. ws.on ('connect', ( ) => {console.log('connected to client'); ws.on('error', (error) => { console.log('ERROR' ,error); });});
D. ws.on ('connect', ( ) => { console.log('connected to client'); }}; ws.on('error', (error) => { console.log('ERROR' , error); }};

正解：C

質問 # 118
Universal Containers (UC) just launched anew landing page, but users complain that the website is slow. A developer found some functions any that might cause this problem. To verify this, the developer decides to execute everything and log the time each of these three suspicious functions consumes.
Which function can the developer use to obtain the time spent by every one of the three functions?

A. console. timeLog ()
B. console.timeStamp ()
C. console.getTime ()
D. console.trace()

正解：A

質問 # 119
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