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Salesforce JavaScript-Developer-I Exam Overview:

Certification Vendor:	Salesforce
Exam Name:	Salesforce Certified JavaScript Developer I
Exam Number:	JS-Dev-101
Passing Score:	65%
Exam Duration:	105 minutes
Real Exam Qty:	60 (plus up to 5 unscored pilot questions)
Exam Price:	$200 USD
Related Certifications:	Salesforce Certified JavaScript Developer I Credential
Exam Format:	Multiple-choice, Multiple-select
Available Languages:	English
Certificate Validity Period:	None (Credential does not expire)
Sample Questions:	Salesforce JavaScript-Developer-I Sample Questions
Exam Way:	Online (proctored via Pearson VUE) or On-site (at a Pearson VUE testing center)
Pre Condition:	None required. 1-2 years of JavaScript development experience (front-end and/or back-end) is strongly recommended. Note: To earn the full credential, candidates must also pass the Lightning Web Components Specialist Superbadge in addition to the JS-Dev-101 exam.
Official Syllabus URL:	https://trailhead.salesforce.com/en/credentials/javascriptdeveloperi

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Salesforce Certified JavaScript Developer I certification can open up a world of opportunities for developers. Salesforce Certified JavaScript Developer (JS-Dev-101) certification demonstrates their skills and knowledge of building custom applications on the Salesforce platform using JavaScript. With this certification, developers can showcase their expertise to potential employers and clients, which can increase their chances of getting hired and securing new projects.

Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q73-Q78):

NEW QUESTION # 73
A developer wrote the following code to test a sum3 function that takes in an array of numbers and returns the sum of the first three numbers in the array, and the test passes.
A different developer made changes to the behavior of sum3 to instead sum only the first two numbers present in the array.

Which two results occur when running this test on the updated sum3 function?
Choose 2 answers

A. The line 05 assertion passes.
B. The line 05 assertion fails.
C. The line 02 assertion passes.
D. Theline 02 assertion fails.

Answer: B,C

NEW QUESTION # 74
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.info(usersList) ;
B. console.groupCol lapsed (usersList) ;
C. console.group(usersList) ;
D. console.table(usersList) ;

Answer: C

NEW QUESTION # 75
Refer to the code below:
Let str = 'javascript';
Str[0] = 'J';
Str[4] = 'S';
After changing the string index values, the value of str is 'javascript'. What is the reason
for this value:

A. Primitive values are immutable.
B. Non-primitive values are immutable.
C. Non-primitive values are mutable.
D. Primitive values are mutable.

Answer: A

NEW QUESTION # 76
Refer to the followingcode:

A. Outer message
B. Inner message
Outer message
C. Outer message
Inner message
D. Button message

Answer: D

NEW QUESTION # 77
Which three browser specific APIs are available for developers to persist data between page loads?

A. indexedDB
B. localStorage
C. global variables
D. IIFEs
E. cookies

Answer: A,B,E

Explanation:
We want mechanisms that persist data between page loads (i.e., after refresh or navigation), in the browser.
* A. localStorage
* Part of the Web Storage API.
* Data persists across page reloads and browser restarts (until explicitly cleared).
* Scoped per origin (protocol + host + port).
* This is a correct persistent storage API.
* B. indexedDB
* A low-level, client-side NoSQL database in the browser.
* Stores large amounts of structured data and persists across reloads and sessions.
* This is also a correct persistent API.
* C. cookies
* Small key/value pairs stored by the browser and often sent with HTTP requests.
* Can have expiration dates and persist across page loads and sessions.
* They are a traditional persistence mechanism in browsers.
* So cookies also qualify.
* D. global variables
* Global JS variables exist only for the life of the current page context.
* When the page is refreshed or navigated away, they are lost.
* They do not persist between page loads.
* E. IIFEs (Immediately Invoked Function Expressions)
* A pattern for creating a new scope, not a persistence mechanism.
* Variables inside an IIFE are still lost when the page reloads.
Thus, the three persistent browser APIs are:
* localStorage
* indexedDB
* cookies

NEW QUESTION # 78
......

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