JS-Dev-101対策学習 & JS-Dev-101日本語版トレーリングSalesforce JS-Dev-101ソフト版問題集のようなバーチャルは購入前に、どうすれば適用性を感じられますか。この問題に心配する必要がありませんし、我々社の無料に提供するSalesforce JS-Dev-101PDF版を直接にダウンロードし、事前に体験できます。何か問題があると、ライブチャットとメールで問い合わせます。我々JPTestKingを選択するとき、Salesforce JS-Dev-101試験にうまく合格できるチャンスを捉えるといえます。 Salesforce Certified JavaScript Developer - Multiple Choice 認定 JS-Dev-101 試験問題 (Q161-Q166):質問 # 161
Refer to the code below:
Let inArray =[ [ 1, 2 ] , [ 3, 4, 5 ] ];
Which two statements result in the array [1, 2, 3, 4, 5] ?
Choose 2 answers
A. []. Concat (... inArray);
B. [ ]. concat.apply(inArray, [ ]);
C. [ ]. Concat.apply ([ ], inArray);
D. [ ]. concat ( [ ....inArray ] );
正解：A、C
質問 # 162
Refer to the followingcode:
class Vehicle{
constructor(plate){
this.plate = plate;
}
}
class Truck extends Vehicle{
constructor(plate, weight){
//Missing code
this.weight = weight;
}
displayWeight(){
console.log(`The truck ${this.plate} has a weight of ${this.weight}lb.`);
}
}let myTruck = new Truck('123Ab',5000);
myTruck.displayWeight();
Which statement should be added to missing code for the code to display 'The truck 123AB has a weight of 5000lb.
A. Vehicle.plate = plate
B. super.plate = plate
C. this.plate= plate
D. super(plate)
正解：D
質問 # 163
A developer is debugging a web server that uses Node.js The server hits a runtimeerror every third request to an important endpoint on the web server.
The developer added a break point to the start script, that is at index.js at he root of the server's source code. The developer wants to make use of chrome DevTools to debug.
Which command can be run to access DevTools and make sure the breakdown is hit ?
A. Node --inspect index.js
B. Node --inspect-brk index.js
C. node -i index.js
D. Node inspect index.js
正解：A
質問 # 164
Which statement parses successfully?
A. JSON.parse ("foo");
B. JSON.parse (""foo'");
C. JSON. parse (""foo"');
D. JSON.parse ("foo");
正解：C
質問 # 165
A developer at Universal Containers is creating their new landing pagebased on HTML, CSS, and JavaScript. The website includes multiple external resources that are loaded when the page is opened.
To ensure that visitors have a good experience, a script named personalizeWebsiteContent needs to be executed when the webpage isloaded and there is no need to wait for the resources to be available.
Which statement should be used to call personalizeWebsiteContent based on the above business requirement?
A. windows,addEventListener('onDOMCContentLoaded', personalizeWebsiteContent);
B. windows,addEventListener('DOMContent Loaded ', personalizeWebsiteContent);
C. windows,addEventListener('onload', personalizeWebsiteContent);
D. windows,addEventListener('load', personalizeWebsiteContent);