TEST JAVASCRIPT-DEVELOPER-I SAMPLE QUESTIONS, JAVASCRIPT-DEVELOPER-I LATEST DEMO

Test JavaScript-Developer-I Sample Questions, JavaScript-Developer-I Latest Demo

Test JavaScript-Developer-I Sample Questions, JavaScript-Developer-I Latest Demo

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Tags: Test JavaScript-Developer-I Sample Questions, JavaScript-Developer-I Latest Demo, Real JavaScript-Developer-I Question, JavaScript-Developer-I Study Guides, Examcollection JavaScript-Developer-I Dumps Torrent

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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q19-Q24):

NEW QUESTION # 19
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. October 05, 2020
  • D. November 05, 2020

Answer: B


NEW QUESTION # 20
Refer to the code below:
let car1 = new Promise((_ ,reject)=> setTimeout(reject,2000,"Car1 crashed in")); let car2 = new Promise(resolve => setTimeout(resolve,1500,"Car2 completed")); let car3 = new Promise(resolve => setTimeout(resolve,3000,"Car3 completed")); Promise.race([car1,car2,car3])
.then(value=>{
let result = `${value} the race.`;
}).catch(err=>{
console.log('Race is cancelled.',err);
});
What is the value of result when promise.race execues?

Answer:

Explanation:
Car2 completed the race.


NEW QUESTION # 21

Which code change should be done for the console to log the following when 'Click me!' is clicked'
> Row log
> Table log

  • A. Remove line 10
  • B. Change line 10 to event.stopPropagation (false) ;
  • C. Change line 14 to elem.addEventListener ('click', printMessage, true);
  • D. Remove lines 13 and14

Answer: A


NEW QUESTION # 22
Refer to the code snippet:
Function getAvailabilityMessage(item) {
If (getAvailability(item)){
Var msg ="Username available";
}
Return msg;
}
A developer writes this code to return a message to user attempting to register a new
username. If the username is available, variable.
What is the return value of msg hen getAvailabilityMessage ("newUserName" ) is
executed and getAvailability("newUserName") returns false?

  • A. undefined
  • B. "Msg is not defined"
  • C. "newUserName"
  • D. "Username available"

Answer: A


NEW QUESTION # 23
A developer creates a generic function to log custom messages in the console. To do this,
the function below is implemented.
01 function logStatus(status){
02 console./*Answer goes here*/{'Item status is: %s', status};
03 }
Which three console logging methods allow the use of string substitution in line 02?

  • A. Log
  • B. Assert
  • C. Message
  • D. Error
  • E. Info

Answer: A,B,E


NEW QUESTION # 24
......

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