CRT-600試験無料問題集（225題）「Salesforce Certified JavaScript Developer I 認定」

出題：1

A developer has an is Dog function that takes one argument cat. They want to schedule the function to run every minute.
What is the correct syntax for scheduling this function?

A. setInterval(isDog, 60000,'cat');

正解：A 解答を投票する

出題：2

The developer wants to test the array shown:
const arr = Array(5).fill(0)
Which two tests are the most accurate for this array ?
Choose 2 answers:

A. console.assert (arr.length >0);

B. console.assert( arr.length === 5 );

C. arr.forEach(elem => console.assert(elem === 0)) ;

D. console.assert(arr[0] === 0 && arr[ arr.length] === 0);

正解：B,C 解答を投票する

出題：3

In the browser, the window object is often used to assign variables that require the broadest scope in an application Node.js application does not have access to the window object by default.
Which two methods are used to address this ?
Choose 2 answers

A. Create a new window object in the root file.

B. Use the document object instead of the window object.

C. Assign variables to module.exports and require them as needed.

D. Assign variables to the global object.

正解：D 解答を投票する

出題：4

A developer is required to write a function that calculates the sum of elements in an array but is getting undefined every time the code is executed. The developer needs to find what is missing in the code below.
Const sumFunction = arr => {
Return arr.reduce((result, current) => {
//
Result += current;
//
), 10);
);
Which option makes the code work as expected?

A. Replace line 04 with result = result +current;

B. Replace line 03 with if(arr.length == 0 ) ( return 0; )

C. Replace line 02 with return arr.map(( result, current) => (

D. Replace line 05 with return result;

正解：D 解答を投票する

出題：5

Refer to the code below:
const car = {
price:100,
getPrice:function(){
return this.price;
}
};
const customCar = Object.create(car);
customCar.price = 70;
delete customCar.price;const result = customCar.getPrice();
What is the value of result after the code executes?

A. null

B. undefined

C. 100

D. 70

正解：C 解答を投票する

出題：6

Which two code snippets show working examples of a recursive function?
Choose 2 answers

A. Const factorial =numVar => {
If (numVar < 0) return;
If ( numVar === 0 ) return 1;
return numVar * factorial ( numVar - 1 );
};

B. Let countingDown = function(startNumber) {
If ( startNumber >0) {
console.log(startNumber) ;
return countingDown(startNUmber);
} else {
return startNumber;
}};

C. Const sumToTen = numVar => {
If (numVar < 0)
Return;
return sumToTen(numVar + 1)};

D. Function factorial ( numVar ) {
If (numVar < 0) return;
If ( numVar === 0 ) return 1;
return numVar -1;

正解：A,B 解答を投票する

出題：7

Given the code below:
01 function GameConsole (name) {
02 this.name = name;
03 }
04
05 GameConsole.prototype.load = function(gamename) {
06 console.log( ` $(this.name) is loading a game : $(gamename) ...`);
07 )
08 function Console 16 Bit (name) {
09 GameConsole.call(this, name) ;
10 }
11 Console16bit.prototype = Object.create ( GameConsole.prototype) ;
12 //insert code here
13 console.log( ` $(this.name) is loading a cartridge game : $(gamename) ...`);
14 }
15 const console16bit = new Console16bit(' SNEGeneziz ');
16 console16bit.load(' Super Nonic 3x Force ');
What should a developer insert at line 15 to output the following message using the method ?
> SNEGeneziz is loading a cartridge game: Super Monic 3x Force . . .

A. Console16bit = Object.create(GameConsole.prototype).load = function
(gamename) {

B. Console16bit.prototype.load(gamename) {

C. Console16bit.prototype.load = function(gamename) {

D. Console16bit.prototype.load(gamename) = function() {

正解：C 解答を投票する

出題：8

Refer to the following code:

A. document.querySelector('$main li:second-child').innerHTML = " The Lion ';

B. document.querySelectorAll('$main $TONY').innerHTML = '" The Lion

C. document.querySelector('$main li.Tony').innerHTML = '" The Lion ';

D. document.querySelector('$main li:nth-child(2)'),innerHTML = " The Lion. ';

正解：B 解答を投票する

出題：9

Refer to the HTML below:
<div id="main">
<ul>
<li>Leo</li>
<li>Tony</li>
<li>Tiger</li>
</ul>
</div>
Which JavaScript statement results in changing " Tony" to "Mr. T."?

A. document.querySelector('$main li.Tony').innerHTML = ' Mr. T. ';

B. document.querySelector('$main li:nth-child(2)'),innerHTML = ' Mr. T. ';

C. document.querySelectorAll('$main $TONY').innerHTML = ' Mr. T. ';

D. document.querySelector('$main li:second-child').innerHTML = ' Mr. T. ';

正解：B 解答を投票する

出題：10

A developer at Universal Containers is creating their new landing page based on HTML, CSS, and JavaScript.
To ensure that visitors have a good experience, a script named personalizeWebsiteContent needs to be executed when the webpage is fully loaded (HTML content and all related files), in order to do some custom initializations.
Which implementation should be used to call Fe:s:-a;::eHec5;te::.-.ter.: based on the business requirement above?

A. Add a listener to the window object to handle the DOMContentLoaded event

B. Add a handler to the personalizeWebsiteContent script to handle the DOMContentLoaded event

C. Add a listener to the window object to handle the lead event

D. Add a handler to the personalizeWebsiteContent script to handle the load event

正解：C 解答を投票する

出題：11

Refer to following code block:
Let array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,];
Let output =0;
For (let num of array){
if (output >0){
Break;
}
if(num % 2 == 0){
Continue;
}
Output +=num;
What is the value of output after the code executes?

A. 36

B. 11

C. 16

D. 25

正解：C 解答を投票する

出題：12

Refer to the code below:
Const pi = 3.1415326,
What is the data type of pi?

A. Double

B. Decimal

C. Float

D. Number

正解：D 解答を投票する

出題：13

Given the HTML below:

Which statement adds the priority-account css class to the Applied Shipping row?

A. document.querySelector('#row-as').classList.add('priority-account');

正解：A 解答を投票する

CRT-600試験無料問題集「Salesforce Certified JavaScript Developer I 認定」