100%無料Salesforce Developer JavaScript-Developer-I問題集PDFお試しサンプル認定ガイドカバー率
PDF試験材料2023年最新の実際に出るJavaScript-Developer-I問題集
Salesforce JavaScript-Developer-I試験は、Salesforceプラットフォーム上でJavaScriptを使用してアプリケーションを開発する予定の方にとって必須の認定試験です。この試験に合格することで、安全でスケーラブルなアプリケーションを開発し、特定のビジネスニーズに合わせてカスタマイズする能力があることを示すことができます。この試験に合格することで、キャリアの見通しを向上させ、就職機会を増やし、Salesforce開発の強固な基盤を築くことができます。
Salesforce JavaScript-Developer-I 認定試験は、Salesforce 認定 JavaScript 開発者になりたい個人のスキルと知識をテストするために設計されています。この認定試験は、JavaScript を使用して Salesforce プラットフォーム上のカスタムアプリケーションを構築することに特化した開発者に最適です。
質問 # 108
A developer has an ErrorHandler module that contains multiple functions.
What kind of export should be leveraged so that multiple functions can be used?
- A. named
- B. all
- C. default
- D. multi
正解：A
質問 # 109
Refer to the code below:
Function changeValue(obj) {
Obj.value = obj.value/2;
}
Const objA = (value: 10);
Const objB = objA;
changeValue(objB);
Const result = objA.value;
What is the value of result after the code executes?
- A. Nan
- B. 0
- C. 1
- D. Undefined
正解：B
質問 # 110
Given the following code:
Let x =('15' + 10)*2;
What is the value of a?
- A. 0
- B. 1
- C. 2
- D. 3
正解：D
質問 # 111
Refer to the string below.
Const str='Salesforce';
Which two statements results in the word 'Sales'?
正解：
解説：
See the Answer below in explanation:
Explanation
Str.substring(0,5);
Str.substr(0,5);
質問 # 112
developer uses the code below to format a date.
After executing, what is the value of formattedDate?
- A. May 10, 2020
- B. June 10, 2020
- C. November 05, 2020
- D. October 05, 2020
正解：A
質問 # 113
Refer to the code below:
Line 05 causes an error.
What are the values of greeting and salutation once code completes?
- A. Greeting is Goodbye and salutation is I say Hello.
- B. Greeting is Hello and salutation is Hello, Hello.
- C. Greeting is Goodbye and salutation is Hello, Hello.
- D. Greeting is Hello and salutation is I say hello.
正解：B
質問 # 114
Refer to the code below:
Which value can a developer expect when referencing country,capital,cityString?
- A. 'NaN'
- B. 'London'
- C. An error
- D. undefined
正解：A
質問 # 115
developer wants to use a module named universalContainersLib and them call functions
from it.
How should a developer import every function from the module and then call the fuctions foo
and bar ?
- A. import (foo, bar) from '/path/universalContainersLib.js';
foo();
bar(); - B. import * from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar(); - C. import all from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar(); - D. import * ad lib from '/path/universalContainersLib.js';
lib.foo();
lib.bar();
正解：D
質問 # 116
Refer to the code below:
What is displayed when myfunction(true) is called?
- A. 2 2 1 2
- B. 2 2 undefined undefined
- C. 2 2 2 2
- D. 2 2 1 1
正解：D
質問 # 117
Refer to the code below:
Which two function can replace line 01 and return 58 to sum? Choose 2 answers
- A. const addBy = (num1) num1 + num2
- B. const addBy = num1 (num2) => num1 + num2 ;
- C. const addBy = function (num1) {
Return function (num2) {
}
} - D. Const addby = function (num1) (
Return function (num2) (
}
}
正解：B、C
質問 # 118
Refer to the code below:
Which statement allows a developer to cancel the scheduled timed function?
- A. ClearTimeout (timerId) ;
- B. ClearTimeout (timeFunction);
- C. removeTimeout (timerId) ;
- D. removeTimeout (timeFunction) ;
正解：D
質問 # 119
Cloud Kicks has a class to represent item for sale in an online store, as shown below:
A new business requirement comes in that request a clothingitem class, that should have all of the properties and methods of the item class, but will also have properties that are specific top clothes.
Which line of code properly declares the clothingitem class such that it inherits from item?
- A. Class clothing item super item (
- B. Class clothingitem extends item (
- C. Class clothingitem implements item (
- D. Class Clothingitem (
正解：B
質問 # 120
Given two expressions var1 and var2. What are two valid ways to return the logical AND of the two expressions and ensure it is data type Boolean ?
Choose 2 answers:
- A. var1 && var2
- B. var1.toBoolean() && var2toBoolean()
- C. Boolean(var1) && Boolean(var2)
- D. Boolean(var1 && var2)
正解：C、D
質問 # 121
Refer to the code below:
A developer import a library that creates a web server. the imported library uses events and callback to start the server.
Which code should be inserted at line 03 to set up an event and start the web server?
- A. server ( (port) => (
Console.log ('Listening on' , port) ;
}}; - B. server( );
- C. Server. on ('connet' , (port) => (
Console.log (Listening on' port);
}}; - D. Server .start();
正解：A
質問 # 122
Refer to the code below:
Function Person(firstName, lastName, eyecolor) {
this.firstName =firstName;
this.lastName = lastName;
this.eyeColor = eyeColor;
}
Person.job = 'Developer';
const myFather = new Person('John', 'Doe');
console.log(myFather.job);
What is the output after the code executes?
- A. Developer
- B. ReferenceError: eyeColor is not defined
- C. ReferenceError: assignment to undeclared variable "Person"
- D. Undefined
正解：D
質問 # 123
The developer wants to test the array shown:
Const arr = Array (5) . fill (0);
Which two test are the most accurate for this array? Choose 2 answers
- A. Console,assert(arr.length === 5) ;
- B. Arr. forEach (elem => console .assert (elem === 0) );
- C. Console,assert(arr(0) === 0 $$ arr (arr .longth ) === 0) ;
- D. Console. Assert (arr. Length > 0) ;
正解：B
質問 # 124
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