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To be eligible for the Salesforce JavaScript-Developer-I exam, candidates must have a basic understanding of JavaScript programming and the Salesforce platform. They must also have experience working with Salesforce tools and technologies, such as Apex, Visualforce, and Lightning Components. JavaScript-Developer-I Exam consists of multiple-choice questions, and candidates must achieve a passing score to earn the certification.
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Salesforce JavaScript-Developer-I exam measures the developer's knowledge of the Salesforce platform, including its capabilities and limitations. It assesses their ability to design, develop, test, and deploy custom applications on the Salesforce platform using JavaScript. JavaScript-Developer-I Exam also includes questions related to various Salesforce tools, such as Apex, Visualforce, and Lightning Web Components.
NEW QUESTION # 83
Referto the following code:
Which two statement could be inserted at line 17 to enable the function call on line 18?
Choose 2 answers
Answer: A,C
NEW QUESTION # 84
Given the code below:
Const copy = JSON.stringify((new String ('false') , new Bolean(false) undefined)); What is the value of copy?
Answer: D
NEW QUESTION # 85
A team that works on a big project uses npm to deal with projects dependencies.
A developer added a dependency does not get downloaded when they execute npm
install.
Which two reasons could be possible explanations for this?
Choose 2 answers
Answer: A,B,D
NEW QUESTION # 86
Refer to the following code:
< html lang= " en " >
< body >
< button class= " secondary " > Save draft < /button >
< button class= " primary " > Save and close < /button >
< /body >
< script >
function displaySaveMessage(event) {
console.log( ' Save message. ' );
}
function displaySuccessMessage(event) {
console.log( ' Success message. ' );
}
window.onload = function() {
document.querySelector( ' .secondary ' )
.addEventListener( ' click ' , displaySaveMessage, true);
document.querySelector( ' .primary ' )
.addEventListener( ' click ' , displaySuccessMessage, true);
}
< /script >
< /html >
Answer: D
Explanation:
The answer choices appear to belong to an event propagation question using nested elements such as an outer element and an inner element.
The important clue is this third argument:
addEventListener( ' click ' , handlerFunction, true);
When the third argument is true, the event listener runs during the capturing phase .
In event capturing, the browser handles the event from the outside toward the inside:
Outer element # Inner element
So, if an inner element is clicked and both the outer and inner elements have click listeners registered with capture mode set to true, the outer listener runs first, then the inner listener runs.
That produces:
Outer message
Inner message
So the matching option is B .
Important correction:
In the exact code shown, the buttons are sibling elements:
< button class= " secondary " > Save draft < /button >
< button class= " primary " > Save and close < /button >
They are not nested inside one another. Therefore, with the code exactly as written:
Clicking the secondary button logs:
Save message.
Clicking the primary button logs:
Success message.
However, because the provided answer choices refer to Outer message and Inner message , the intended concept is clearly event capturing. In a capturing-phase question with nested outer and inner elements, the correct order is:
Outer message
Inner message
Therefore, the verified answer for the intended event-capturing question is B .
NEW QUESTION # 87
Refer to the code below (assuming Promise.race is intended):
let cat3 = new Promise(resolve = >
setTimeout(resolve, 3000, " Cat 3 completes " )
);
Promise.race([cat1, cat2, cat3])
.then(value = > {
let result = `${value} the race.`;
})
.catch(err = > {
console.log( " Race is cancelled: " , err);
});
(Assuming cat1 and cat2 are similar to earlier examples: cat2 resolves fastest.) What is the value of result when Promise.race executes?
Answer: B
Explanation:
From earlier pattern (cars/cats race):
* One promise resolves the fastest with " Car 2 completed " (or analogous " Cat 2 completes " ).
* Promise.race resolves with the first settled promise's value.
* In .then, value is " Car 2 completed " and:
let result = `${value} the race.`;
// " Car 2 completed the race. "
Thus result is " Car 2 completed the race. " # option A.
NEW QUESTION # 88
......
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