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JS-Dev-101 Certification Book Torrent & Reliable JS-Dev-101 Test Online

donbell415

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JS-Dev-101 Certification Book Torrent & Reliable JS-Dev-101 Test Online

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Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions (Q201-Q206):NEW QUESTION # 201
Refer to the following array:
Let arr = [1, 2, 3, 4, 5];
Which three options result in x evaluating as [1,2]?
Choose 3 answer
  • A. let x = arr.filter ((a) => 2 }) ;
  • B. let x = arr. slice (0, 2);
  • C. let x =arr.splice(0, 2);
  • D. let x arr.filter((a) => (return a <= 2 });
  • E. let x = arr. slice (2);
Answer: B,C,D

NEW QUESTION # 202
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);
Answer: C,D

NEW QUESTION # 203
Given the code below:
const delay = async delay =>{
return new Promise((resolve,reject)=>{
console.log(1);
setTimeout(resolve,deleay);
});
};
const callDelay =async ()=>{
console.log(2);
const yup = await delay(1000);
console.log(3);
}
console.log(4);
callDelay();
console.log(5);
What is logged to the console?
Answer:
Explanation:
4 2 1 5 3

NEW QUESTION # 204
A developer has a formatName function that takes two arguments, firstName and lastName and returns a string. They want to schedule the function to run once after five seconds.
What is the correct syntax toschedule this function?
  • A. setTimeout (formatName(), 5000, "John", "BDoe");
  • B. setTimout(() => { formatName("John', 'Doe') }, 5000);
  • C. setTimeout ('formatName', 5000, 'John", "Doe');
  • D. setTimeout (formatName('John', ''Doe'), 5000);
Answer: C

NEW QUESTION # 205
Refer to the code below:
let o = {
get js() {
let city1 = String("st. Louis");
let city2 = String(" New York");
return {
firstCity: city1.toLowerCase(),
secondCity: city2.toLowerCase(),
}
}
}
What value can a developer expect when referencing o.js.secondCity?
  • A. An error
  • B. ' new york '
  • C. ' New York '
  • D. Undefined
Answer: B

NEW QUESTION # 206
......
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