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Salesforce JavaScript-Developer-I Certification leaning site Salesforce JavaScript-Developer-Is Certification resources
How to Prepare for Salesforce JavaScript Developer I Exam
Preparation Guide for Salesforce JavaScript Developer I Exam
Introduction
Salesforce is a solution for managing customer relationships that unite customers and companies. This is an interactive CRM platform that provides a single, shared view of every client in all the divisions including marketing, distribution, exchange, and operation. Provide the clients with the individual experience Salesforce demand 360 product via the Integrated CRM Platform. It delivers solid and related goods to boost marketing, revenue, exchange, operation, IT, and more. Salesforce is a digital cloud computing (SaaS) firm specializing in the management of client relationships (CRMs). There was a mistake. The app is now the number one of consumer satisfaction and allows organizations to track customer behavior, advertise to consumers, and more. Salesforce is common because it is bundled with features such as contact management, workflow development, task management, incentive monitoring, teamwork tools, customer experience tools, analytics, and interactive, smartphone dashboard.
How to Study the Salesforce JavaScript-Developer-I Exam
The best study material one can get is the JavaScript-Developer-I practice exam dumps. To ensure good grades, do attempt the JavaScript-Developer-I practice exams. The JavaScript Developer I from Salesforce typically has 1-2 years of experience as a JavaScript developer with the following JavaScript topics.
Item Model Document
Activities
Modules
Asynchronous Programming
Control of Mistake
Scope of Variables
Functions (more functions in higher order)
Monitor (agnostic platform)
Objects & Arrays: Data Structures
Conversion type (inclusive versus explicit)
Classes
JavaScript on the backend
Forms of data and operators
Discharge
Strings
To prepare for this test, we advise a combination of practical experience, completion of training courses, pathways and self-study in the areas listed in the examination outline section of this examination guide.
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Benefits in Obtaining Salesforce JavaScript-Developer-I Certification
With the introduction of the Lightning Experience by Salesforce, it is possible to develop cool, looking applications for a wide range of tasks. Admins have been able to create beautiful pages for their objects more than ever, with an interface entirely tailored for each user.For developers, the same application has never before been possible for Salesforce developers to create applications that stretch well beyond Salesforce's declarative features. It's all achieved with the use of a JavaScript application for Lightning & Lightning Web components.
The certification for JavaScript Developer I has just been released and fills a large gap in the certification list for Salesforce. Salesforce Developers who want to prove their Lightning skills, but also new entrants into the Salesforce community, are certified to demonstrate that they know what is relevant. A typical Salesforce 60 multi-choice test is split into two parts and is influenced by a super badge (Similar to Developer II certification).
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Testing | 7% | - Test effectiveness evaluation - Unit testing concepts - Writing and modifying unit tests - Test coverage and reliability |
| Variables, Types, and Collections | 23% | - Truthy and falsy evaluations - Primitive and complex data types - Arrays and collections - JSON parsing and manipulation - Strings, numbers, and dates - Type coercion and conversion - Variable declarations and initialization |
| Objects, Functions, and Classes | 25% | - Arrow functions - Execution flow and context - ES6 classes and inheritance - Object creation and manipulation - Variable scope and closures - Higher-order functions - Function declarations and expressions - Prototypal inheritance - Modules and decorators |
| Server Side JavaScript | 8% | - Node.js fundamentals - Package management (npm) - Core Node.js modules - Server-side JavaScript implementations - CLI commands |
| Browser and Events | 17% | - Browser Developer Tools usage - DOM manipulation - Event propagation (bubbling and capturing) - Event handling and listeners - Browser-specific APIs - Interacting with forms and user input |
| Debugging and Error Handling | 7% | - Custom error types - Error handling techniques (try/catch/finally) - Console methods for debugging - Breakpoints and code inspection |
| Asynchronous Programming | 13% | - Event loop and execution flow - Promises (creation, chaining, error handling) - Async/Await syntax - Asynchronous patterns for business requirements - Callbacks |
Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) Sample Questions:
値:
true + 3 + ' 100 ' + null
- A. " 2200null "
- B. " 4100 "
- C. " 4100null "
- D. 104
Correct Answer: C 🗳️
Explanation: Only visible for ActualPDF 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.substr(1, 5);
- C. str.substr(0, 5);
- D. str.substring(0, 5);
Correct Answer: C,D 🗳️
Explanation: Only visible for ActualPDF members. You can sign-up / login (it's free).
let sampleText = "素早い茶色のキツネがジャンプする";
部分文字列に対して真を返す式はどれですか？(３つ選択)
- A. sampleText.indexOf( ' fox ' ) !== -1;
- B. sampleText.indexOf( ' quick ' ) > -1;
- C. sampleText.indexOf( ' Quick ' ) !== -1;
- D. sampleText.includes( ' fox ' );
- E. sampleText.include( ' fox ' ) !== -1;
Correct Answer: A,B,D 🗳️
Explanation: Only visible for ActualPDF members. You can sign-up / login (it's free).
以下のコードを参照してください。
01 class Ship {
02 constructor(size) {
03 this.size = size;
04 }
05 }
06
07 class FishingBoat extends Ship {
08 constructor(size, capacity){
09 //Missing code
10 this.capacity = capacity;
11 }
12 displayCapacity() {
13 console.log( ' The boat has a capacity of ${this.capacity} people. ' );
14 }
15 }
16
17 let myBoat = new FishingBoat( ' medium ' , 10);
18 myBoat.displayCapacity();
コードに表示させるには、9行目にどのステートメントを追加すればよいでしょうか？
そのボートの定員は10人ですか？
- A. this.size = size;
- B. ship.size = size;
- C. super(size);
- D. super.size = size;
Correct Answer: C 🗳️
Explanation: Only visible for ActualPDF members. You can sign-up / login (it's free).
以下のコードを参照してください。
01 x = 3.14;
02
03 function myFunction() {
04 'use strict';
05 y = x;
06 }
07
08 z = x;
09 myFunction();
4行目の「use strict」の意味を考慮すると、コードの実行を説明する3つの記述はどれですか？
- A. 'use strict' は 05 行目にのみ影響します。
- B. 'use strict' は巻き上げられるため、すべての行に影響します。
- C. z は 3.14 に等しい。
- D. 'use strict' は 4 行目からファイルの末尾まで有効です。
- E. 5行目でエラーが発生しました。
Correct Answer: A,C,E 🗳️
Explanation: Only visible for ActualPDF members. You can sign-up / login (it's free).
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Viewing questions 1-5 out of 149 questions.
