JS-Dev-101 Quizfragen Und Antworten - JS-Dev-101 Zertifikatsfragen

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Salesforce JS-Dev-101 Exam Overview:

Certification Vendor:	Salesforce
Exam Name:	Salesforce Certified JavaScript Developer I
Exam Number:	JS-Dev-101
Certificate Validity Period:	Lifetime (No renewal required)
Real Exam Qty:	60 (plus up to 5 unscored pilot questions)
Related Certifications:	Lightning Web Components Specialist Superbadge Salesforce Certified JavaScript Developer I
Available Languages:	English
Exam Duration:	105 minutes
Exam Price:	$200 USD
Exam Format:	Multiple Select, Multiple Choice
Passing Score:	65%
Sample Questions:	Salesforce JS-Dev-101 Sample Questions
Exam Way:	Online (Proctored)
Pre Condition:	Completion of the Lightning Web Components Specialist Superbadge is required to earn the full credential, though it can be completed before or after the exam.
Official Syllabus URL:	https://trailhead.salesforce.com/en/credentials/javascriptdeveloperi

>> JS-Dev-101 Quizfragen Und Antworten <<

JS-Dev-101 Zertifikatsfragen, JS-Dev-101 Lernressourcen

Die Schulungsunterlagen zur Salesforce JS-Dev-101 Zertifizierungsprüfung von unserem It-Pruefung haben präzise und flächendeckende Inhalte. Diese Lernhilfe sind geeignet für Sie und werden die notwendigsten Ausbildungsmaterialien sein, wenn Sie die Zertifizierungsprüfung bestehen möchten. Hier versprechen wir, dass Sie einjährige Aktualisierung kostenlos genießen können, nachdem Sie unsere Schulungsunterlagen zur Salesforce JS-Dev-101 Zertifizierungspfrüfung gekauft haben. Wenn Sie die JS-Dev-101 Prüfung nicht bestehen oder unsere Fragenkataloge irgend ein Qualitätsproblem haben, geben wir Ihnen eine bedingungslose volle Rückerstattung.

Salesforce JS-Dev-101 Prüfungsplan:

Thema	Einzelheiten
Thema 1	Testing: Covers evaluating unit test effectiveness against a block of code and modifying tests to improve their coverage and reliability.
Thema 2	Objects, Functions, and Classes: Covers function, object, and class implementations to meet business requirements, along with the use of modules, decorators, variable scope, and execution flow.
Thema 3	Debugging and Error Handling: Covers proper error handling techniques and the use of the console and breakpoints to debug code.
Thema 4	Server Side JavaScript: Covers Node.js implementations, CLI commands, core modules, and package management solutions for given scenarios.

Salesforce Certified JavaScript Developer - Multiple Choice JS-Dev-101 Prüfungsfragen mit Lösungen (Q113-Q118):

113. Frage
Why would a developerspecify a package.jason as a developed forge instead of a dependency ?

A. It should be bundled when the package is published.
B. It is required by the application in production.
C. It is only needed for local development and testing.
D. Other required packages depend on it for development.

Antwort: C

114. Frage
Refer to the following code:
Let sampleText = 'The quick brown fox jumps';
A developer needs to determine if a certainsubstring is part of a string.
Which three expressions return true for the given substring ?
Choose 3 answers

A. sampleText.includes(' fox ');
B. sampleText.includes(' quick ') !== -1;
C. sampleText.includes(' Fox ', 3)
D. sampleText.includes('fox');
E. sampleText.includes(' quick ', 4);

Antwort: A,B,E

115. Frage
Which three options show valid methods for creating a fat arrow function?
Choose 3 answers

A. [ ] => ( console.log(' executed ') ;)
B. (x,y,z) => ( console.log(' executed ') ;)
C. x => ( console.log(' executed ') ; )
D. ( ) => ( console.log(' executed ') ;)
E. X,y,z => ( console.log(' executed ') ;)

Antwort: B,C

116. Frage
01 function Animal(size, type) {
02 this.type = type || 'Animal';
03 this.canTalk = false;
04 }
05
06 Animal.prototype.speak = function() {
07 if (this.canTalk) {
08 console.log("It spoke!");
09 }
10 };
11
12 let Pet = function(size, type, name, owner) {
13 Animal.call(this, size, type);
14 this.size = size;
15 this.name = name;
16 this.owner = owner;
17 }
18
19 Pet.prototype = Object.create(Animal.prototype);
20 let pet1 = new Pet();
Given the code above, which three properties are set for pet1?

A. type
B. speak
C. owner
D. canTalk
E. name

Antwort: A,D,E

Begründung:
When pet1 = new Pet(); is created:
Inside Pet constructor:
Animal.call(this, size, type);
this.size = size;
this.name = name;
this.owner = owner;
Animal.call(this, size, type):
Sets this.type = type || 'Animal' → 'Animal' (because type is undefined).
Sets this.canTalk = false.
Then this.size, this.name, this.owner are set (to undefined since no args passed), but they do exist as properties.
So as own properties, pet1 has: type, canTalk, size, name, owner.
speak is defined on Animal.prototype, so pet1.speak exists by inheritance, but is not an own data property created in the constructor.
From the listed options, three important properties directly set by constructor logic and clearly used in behavior are:
canTalk
name
type
Thus, C, D, E.

117. Frage
Considering the implications of 'use strict' on line 04, which three statements describe the execution of the code?
Choose 3 answers

A. z is equal to 3.14.
B. Line 05 throws an error.
C. 'use strict' has an effect only on line 05.
D. 'use strict' has an effect between line 04 and the end of the file.
E. 'use strict' is hoisted, so it has an effect on all lines.

Antwort: A,B,C

118. Frage
......

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