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Salesforce JavaScript-Developer-I Exam Syllabus Topics:
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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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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.
Discharge
Strings
Forms of data and operators
Functions (more functions in higher order)
Activities
Classes
Conversion type (inclusive versus explicit)
Scope of Variables
JavaScript on the backend
Asynchronous Programming
Control of Mistake
Item Model Document
Objects & Arrays: Data Structures
Monitor (agnostic platform)
Modules
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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You must get an idea of exactly what this certification is, before investing your valuable time, effort, or money in Salesforce. The demand and the need for Salesforce certified professionals are rapidly growing and so Salesforce JavaScript Developer I Certification is becoming more and more popular. Different types of online training sessions are provided such as Intellipaat 's online training sessions for the Salesforce JavaScript Developer I Qualification . It is instructor-led teaching by subject professionals working in major organizations. This style of training includes live sessions with the teacher, along with a forum where you can clear all your course-based doubts.
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Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions:
A developer is leading the creation of a new web server for their team that will fulfill API requests from an existing client. The team wants a web server that runs on Node.js, and they want to use the new web framework Minimalist.js. The lead developer wants to advocate for a more seasoned back-end framework that already has a community around it.
Which two frameworks could the lead developer advocate for?
- A. Gatsby
- B. Next
- C. Next.js
- D. Angular
Correct Answer: B,C 🗳️
Explanation: Only visible for PassLeader members. You can sign-up / login (it's free).
Which statement accurately describes the behavior of the async/await keywords?
- A. The associated function sometimes returns a promise.
- B. The associated function can only be called via asynchronous methods.
- C. The associated function is asynchronous, but acts like synchronous code.
- D. The associated class contains some asynchronous functions.
Correct Answer: C 🗳️
Explanation: Only visible for PassLeader members. You can sign-up / login (it's free).
A team at Universal Containers works on a big project and uses yarn to manage the project ' s dependencies.
A developer added a dependency to manipulate dates and pushed the updates to the remote repository. The rest of the team complains that the dependency does not get downloaded when they execute yarn .
What could be the reason for this?
- A. The developer added the dependency as a dev dependency, and YARN_ENV is set to production.
- B. The developer missed the option --add when adding the dependency.
- C. The developer missed the option --save when adding the dependency.
- D. The developer added the dependency as a dev dependency, and NODE_ENV is set to production.
Correct Answer: D 🗳️
Explanation: Only visible for PassLeader members. You can sign-up / login (it's free).
A developer publishes a new version of a package with bug fixes but no breaking changes. The old version number was 2.1.1.
What should the new package version number be based on semantic versioning?
- A. 2.1.2
- B. 3.1.1
- C. 2.2.0
- D. 2.2.1
Correct Answer: A 🗳️
Explanation: Only visible for PassLeader members. You can sign-up / login (it's free).
A class was written to represent items for purchase in an online store, and a second class representing items that are on sale at a discounted price. The constructor sets the name to the first value passed in. There is a new requirement for a developer to implement a description method that will return a brief description for Item and SaleItem.
01 let regItem = new Item( ' Scarf ' , 55);
02 let saleItem = new SaleItem( ' Shirt ' , 80, .1);
03 Item.prototype.description = function() { return ' This is a ' + this.name; }
04 console.log(regItem.description());
05 console.log(saleItem.description());
06
07 SaleItem.prototype.description = function() { return ' This is a discounted ' + this.name; } What is the output when executing the code above?
- A. This is a Scarf
Uncaught TypeError: saleItem.description is not a function
This is a Shirt
This is a discounted Shirt - B. This is a Scarf
This is a Shirt
This is a Scarf
This is a discounted Shirt - C. This is a Scarf
This is a Shirt
This is a discounted Scarf
This is a discounted Shirt - D. This is a Scarf
Uncaught TypeError: saleItem.description is not a function
This is a Scarf
This is a discounted Shirt
Correct Answer: B 🗳️
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