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| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I |
| Exam Number: | JS-Dev-001 |
| Real Exam Qty: | 60 |
| Exam Price: | USD 200 (may vary by region/tax) |
| Passing Score: | 65% |
| Exam Format: | Multiple Select, Multiple Choice |
| Certificate Validity Period: | 1 year (maintenance required via Salesforce certification maintenance modules) |
| Available Languages: | English |
| Related Certifications: | Salesforce Certified Platform App Builder Salesforce Certified Platform Developer I Salesforce Certified JavaScript Developer I |
| Exam Duration: | 105 minutes |
| Recommended Training: | Salesforce Developer Learning Paths Salesforce Trailhead JavaScript Developer I Prep |
| Exam Registration: | Salesforce Certification Registration (Webassessor) Salesforce Credentials Page |
| Sample Questions: | Salesforce JavaScript-Developer-I Sample Questions |
| Exam Way: | Online proctored or onsite testing via Kryterion Webassessor |
| Pre Condition: | No formal prerequisites, but familiarity with JavaScript and Salesforce platform development is strongly recommended. |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/javascriptdeveloper1 |
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Salesforce Certified JavaScript Developer I certification is highly valued in the industry, and it provides numerous benefits to professionals. Salesforce Certified JavaScript Developer (JS-Dev-101) certification can help developers to enhance their career opportunities, increase their earning potential, and get recognized as experts in the industry. Salesforce Certified JavaScript Developer (JS-Dev-101) certification also provides access to a wide range of resources, including training, support, and networking opportunities.
By earning the Salesforce Certified JavaScript Developer I certification, individuals can demonstrate their expertise in developing custom applications on the Salesforce platform using JavaScript. Salesforce Certified JavaScript Developer (JS-Dev-101) certification can enhance a developer’s career opportunities and make them a more valuable asset to their organization. Additionally, Salesforce Certified JavaScript Developer I certification holders are recognized by the industry as experts in the field and are listed on Salesforce’s official website as certified professionals.
NEW QUESTION # 58
Referto the code below:
new Promise((resolve, reject) => {
const fraction = Math.random();
if( fraction >0.5) reject("fraction > 0.5, " + fraction);
resolve(fraction);
})
.then(() =>console.log("resolved"))
.catch((error) => console.error(error))
.finally(() =>console.log(" when am I called?"));
When does Promise.finally on line 08 get called?
Answer: C
NEW QUESTION # 59
Refer to the code below:
Line 05 causes an error.
What are the values of greeting and salutation once code completes?
Answer: B
NEW QUESTION # 60
A developer needs to debug a Node.js web server because a runtime error keeps occurring at one of the endpoints.
The developer wants to test the endpoint on a local machine and make the request against a local server to look at the behavior. In the source code, the server.js file will start the server. The developer wants to debug the Node.js server only using the terminal.
Which command can the developer use to open the CLI debugger in their current terminal window?
(With corrected typing errors: node_inspect # node inspect, node_start_inspect # node start inspect.)
Answer: B
NEW QUESTION # 61
A developer implements a function that adds a few values.
Function sum(num) {
If (num == undefined) {
Num =0;
}
Return function( num2, num3){
If (num3 === undefined) {
Num3 =0 ;
}
Return num + num2 + num3;
}
}
Which three options can the developer invoke for this function to get a return value of 10 ?
Choose 3 answers
Answer: B,D
NEW QUESTION # 62
A developer at Universal Containers creates a 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 to do some custom initialization when the webpage is fully loaded with HTML content and all related files.
Which statement should be used to call personalizeWebsiteContent based on the above business requirement?
Answer: B
Explanation:
Two key browser events:
* DOMContentLoaded (fired on document): Fired when the HTML document has been completely loaded and parsed, without waiting for stylesheets, images, and subresources to finish loading.
* load (fired on window): Fired when the entire page is fully loaded, including all dependent resources such as stylesheets and images.
The requirement states:
"... when the webpage is fully loaded with HTML content and all related files." That matches the semantics of the load event on the window object.
So the correct code is:
window.addEventListener( ' load ' , personalizeWebsiteContent);
Why others are incorrect:
* A: DOMContentLoaded fires earlier, when HTML is parsed, but before all related files (images, some styles, etc.) are guaranteed to be loaded.
* B: ' onDOMContentLoaded ' is not a valid event name; the event is ' DOMContentLoaded ' .
* D: When using addEventListener, the event type is ' load ' , not ' onload ' . ' onload ' is the name of the handler property (window.onload = ...), not the event string.
Relevant concepts: window.load event, DOMContentLoaded, addEventListener syntax, page load lifecycle.
NEW QUESTION # 63
......
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