Online Access Free JavaScript-Developer-I Exam Questions

No.# option - A right answer from Chatgpt

No.# Ans A

No.# const delay = async delay => {
return new Promise((resolve, reject) => {
setTimeout (resolve,delay);});};
const callDelay =async () =>{
const yup =await delay(1000);
console.log(1);
};

console.log(2);
callDelay();
console.log(3);

No.# Answer c is correct.

No.# https://www.knowledgehut.com/blog/web-development/node-js-global-variables

It would be helpful throughout my life. Just want to say thank you.

No.# The correct answer is C. With the keyword await, it blocks the execution until the promise is resolved then continue to the next line

No.# console.error will always show an error even if the statement is true

No.# Counter = 0;
const logCounter = () => {
console.log(counter);
);
logCounter();
setTimeout(logCOunter, 1100);
setInterval(() => {
Counter++
logCounter();
}, 1000);

Console: 0112 // 345678 etc

No.# if params in the function are:
Function Person(firstName, lastName, eyecolor)
The answer is A
if params in the function are:
Function Person(firstName, lastName, eyeColor)
The answer is C

No.# correct answer is B
productcode is true bad testcode fale
→false positive

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No.# All options are incorrect
In this question we have a typo it should be str = 'Salesforce';
now the answer should be
either str.substr(0.4)
or str.substring(0,4)
here indexing will be like this
/**
* s = 0
* a = 1
* l = 2
* e = 3
* s = 4
* f = 5
* o = 6
* r = 7
* c = 8
* e = 9
*/
substr is a deprecated method of JS, but both methods work and both methods when take the 2nd parameters then they ignores the last index number and run throw the last index number - 1

No.# c is the only correct option

No.# Option A, C will be correct.
B, D are incorrect because in the question, it is written that window object is not to be used, and option B,D are suggesting to work over window object, which is why they are incorrect.

No.# Only A,D are correct
Infinite is not divisible by any number which is why the response will be empty -> ' ' , so satisfy the condition.

No.# A -> Correct

No.# Option A -> Invalid data type error : Integer
Option B -> the ' ) ' is missing in this -> so throws error in this -> otherwise it will give o/p -> 6
Option C,D -> both gives same o/p -> 6
if in function calling string is sent as '8' then all 3 options B,C,D -> gives answer -> 270 which is incorrect
So if we consider the preference then option C should be considered correct. but it doesn't mean B,D are incorrect.